Download or read book The United States Catalog written by Eleanor E. Hawkins and published by . This book was released on 1921 with total page 2222 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The United States Catalog written by and published by . This book was released on 1921 with total page 2212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The United States Catalog Books in Print January 1 1912 written by H.W. Wilson Company and published by Minneapolis ; New York : H.W. Wilson. This book was released on 1921 with total page 2174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The United States Catalog written by and published by . This book was released on 1928 with total page 1644 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The United States Catalog Supplement January 1918 June 1921 written by Eleanor E. Hawkins and published by . This book was released on 1921 with total page 1190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Cumulative Book Index written by and published by . This book was released on 1918 with total page 2212 pages. Available in PDF, EPUB and Kindle. Book excerpt: A world list of books in the English language.

Download or read book The United States Catalog written by Mary Burnham and published by . This book was released on 1928 with total page 1612 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Conservation Biology of Lycaenidae butterflies written by T. R. New and published by IUCN. This book was released on 1993 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Insects at Low Temperature written by Richard Lee and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of insects at low temperature is a comparatively new field. Only recently has insect cryobiology begun to mature, as research moves from a descriptive approach to a search for underlying mechanisms at diverse levels of organization ranging from the gene and cell to ecological and evolutionary relationships. Knowledge of insect responses to low temperature is crucial for understanding the biology of insects living in seasonally varying habitats as well as in polar regions. It is not possible to precisely define low temperature. In the tropics exposure to 10-15°C may induce chill coma or death, whereas some insects in temperate and polar regions remain active and indeed even able to fly at O°C or below. In contrast, for persons interested in cryopreservation, low temperature may mean storage in liquid nitrogen at - 196°C. In the last decade, interest in adaptations of invertebrates to low temperature has risen steadily. In part, this book had its origins in a symposium on this subject that was held at the annual meeting of the Entomological Society of America in Louisville, Kentucky, USA in December, 1988. However, the emergence and growth of this area has also been strongly influenced by an informal group of investigators who met in a series of symposia held in Oslo, Norway in 1982, in Victoria, British Columbia, Canada in 1985 and in Cambridge, England in 1988. Another is scheduled for Binghamton, New York, USA (1990).

Download or read book The United States Catalog written by Mary Burnham and published by . This book was released on 1928 with total page 1656 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Milkweed Butterflies Their Cladistics and Biology written by Phillip Ronald Ackery and published by . This book was released on 1984 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Carcasson s African Butterflies written by PR Ackery and published by CSIRO PUBLISHING. This book was released on 1995-01-01 with total page 1626 pages. Available in PDF, EPUB and Kindle. Book excerpt: The result of more than 20 years of research and collaboration by international butterfly experts, this book is the first comprehensive catalogue to the butterfly fauna of any major tropical region and, as such, provides a basic research tool for any worker with an interest in African butterflies. Covering 3593 recognised species in 300 genera, it deals with about 20% of the world butterfly fauna. Included are entries for all genus-group, species-group and infra-subspecific names applicable to the Afrotropical butterflies, a total of about 14 000 names. This work has a more wide-ranging appeal than a narrow taxonomic list, a volume that will be of value not only to taxonomists but to all biologists with an interest in Africa and its butterfly fauna.

Download or read book Relict Species written by Jan Christian Habel and published by Springer Science & Business Media. This book was released on 2009-12-03 with total page 451 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mankind has evolved both genetically and culturally to become a most successful and dominant species. But we are now so numerous and our technology is so p- erful that we are having major effects on the planet, its environment, and the b- sphere. For some years prophets have warned of the possible detrimental consequences of our activities, such as pollution, deforestation, and overfishing, and recently it has become clear that we are even changing the atmosphere (e. g. ozone, carbon dioxide). This is worrying since the planet’s life systems are involved and dependent on its functioning. Current climate change – global w arming – is one recognised consequence of this larger problem. To face this major challenge, we will need the research and advice of many disciplines – Physics, Chemistry, Earth Sciences, Biology, and Sociology – and particularly the commitment of wise politicians such as US Senator Al Gore. An important aspect of this global problem that has been researched for several decades is the loss of species and the impoverishment of our ecosystems, and hence their ability to sustain themselves, and more particularly us! Through evolutionary time new species have been generated and some have gone extinct. Such extinction and regeneration are moulded by changes in the earth’s crust, atmosphere, and resultant climate. Some extinctions have been massive, particularly those asso- ated with catastrophic meteoric impacts like the end of the Cretaceous Period 65Mya.

Download or read book National Parks and Protected Areas written by James Gordon Nelson and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: National parks and protected areas offer a wealth of ecological and social contributions or services to humans and life on earth. This book describes the strengths of national parks and protected areas in different parts of Europe and North America and the challenges to the full realization of their goals. It shows that they are useful not only in conserving rare species and biodiversity, but also in protecting water supply and other resources necessary to tourism and to economic and social development generally. Ideas and information on useful planning, management and decision-making arrangements are presented, and research needs are identified.

Download or read book Butterflies Worth Knowing written by Clarence Moores Weed and published by Legare Street Press. This book was released on 2023-07-18 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a guide to butterflies worth knowing. It provides descriptions and illustrations of various species of butterflies, as well as information on their life cycles and habitats. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Download or read book Biodiversity written by John I. Spicer and published by The Rosen Publishing Group, Inc. This book was released on 2009-01-15 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses the many different life forms that have existed on Earth, their importance, and how they have changed over time.

Download or read book Biotic Homogenization written by Julie L. Lockwood and published by Springer Science & Business Media. This book was released on 2001-05-31 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological homogenization is the dominant process shaping the future global biosphere. As global transportation becomes faster and more frequent, it is inevitable that biotic intermixing will increase. Unique local biotas will become extinct only to be replaced by already widespread biotas that can tolerate human activities. This process is affecting all aspects of our world: language, economies, and ecosystems alike. The ultimate outcome is the loss of uniqueness and the growth of uniformity. In this way, fast food restaurants exist in Moscow and Java Sparrows breed on Hawaii. Biological homogenization qualifies as a global environmental catastrophe. The Earth has never witnessed such a broad and complete reorganization of species distributions.