Download or read book U S Geological Survey Circular written by and published by . This book was released on 1984 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geochemistry of Haines Klukwan Porcupine Area Southeastern Alaska written by and published by . This book was released on 1991 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 1989 Annual Report on Alaska s Mineral Resources written by and published by . This book was released on 1989* with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Economic Geology of Haines Klukwan Porcupine Area Southeastern Alaska written by and published by . This book was released on 1991 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Information Circular written by Alaska. Division of Geological and Geophysical Surveys and published by . This book was released on 1992 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Publications Catalog of the Division of Geological Geophysical Surveys written by Alaska. Division of Geological and Geophysical Surveys and published by . This book was released on 1992 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Checklist of State Publications written by Library of Congress. Exchange and Gift Division and published by . This book was released on 1989 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: June and Dec. issues contain listings of periodicals.
Download or read book MONTHLY CHECKLIST OF STATE PUBLICATIONS written by and published by . This book was released on 1989 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation and Management of Disease in Wild Animals written by G.A. Wobeser and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: - A hypothesis is a proposition, set forth as an explanation for the occurrence of a phenomenon, that can be tested. - The basis for scientific investigation is the collection of information to formulate and test hypotheses. - Experimental methods measure the effect of manipulations caused by the investigator; observational methods collect information about naturally occurring events. - There are three sub-types of experimental techniques that differ in the way subjects are chosen for inclusion in the study, in the amount of control that the investigator has over variables, and in the method used to assess changes in other variables. - Descriptive observational studies dominate the early phase of most investigations and involve the description of disease-related events in the population. Associations among factors may be observed but the strength of the associations is not measured. - Analytical observation al techniques are of three basic types: prevalence surveys, case:control studies, and incidence or cohort studies. All attempt to explain the nature of relationships among various factors and to measure the strength of associations. - Prevalence surveys and case:control studies deal with disease existing at the time of the study; incidence studies are concerned with the development of disease over time. - Observational studies may be retrospective, using existing data, or prospective with collection of new information.
Download or read book The Rocks and Rivers of British Columbia written by Walter Moberly and published by London : H. Blacklock. This book was released on 1885 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Uranium Extraction Technology written by International Atomic Energy Agency and published by . This book was released on 1993 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this publication is to update and expand the first edition, which was published in 1983, and to report on later advances in uranium ore processing. It includes background information about the principles of the unit operations used in uranium ore processing and summarizes the current state of the art. Extensive references provide sources for specific technological details.
Download or read book Mine Wastes written by Bernd Lottermoser and published by Springer Science & Business Media. This book was released on 2013-04-18 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today's best practice in environmental mine-waste management requires a thorough understanding of the wastes produced. The knowledge of mine wastes represents a new interdisciplinary science and this book provides an introductory, descriptive and analytic overview of the wastes produced in the mineral industry. It describes the characterization, prediction, monitoring, disposal and treatment as well as environmental impacts. Intended for undergraduate courses, it systematically builds the reader’s understanding and knowledge of the wastes produced, their physical and chemical characteristics, and how to deal responsibly with them on a short and long-term basis. The text employs 22 case studies spanning the world’s mineral industry that elucidate best practice and specific challenges in mine-waste management and site rehabilitation.
Download or read book Productivity and Conservation in Northern Circumpolar Lands written by William Albert Fuller and published by Morges, Switzerland : International Union for Conservation of Nature and Natural Resources. This book was released on 1970 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conference of biologists and ecologists discussing arctic environment in terms of its potential in terrestrial biotic productivity and how best this can be maintained and augmented by conservation and management practices.
Download or read book Animals Influence on the Landscape and Ecological Importance written by Friedrich-Karl Holtmeier and published by Springer. This book was released on 2014-10-22 with total page 547 pages. Available in PDF, EPUB and Kindle. Book excerpt: In its first English-language edition, this book introduces the many-faceted interactions of animal populations with their habitats. From soil fauna, ants and termites to small and large herbivores, burrowing mammals and birds, the author presents a comprehensive analysis of animals and ecosystems that is as broad and varied as all nature. Chapter 2 addresses the functional role of animals in landscape ecosystems, emphasizing fluxes of energy and matter within and between ecosystems, and the effects of animals on qualitative and structural habitat change. Discussion includes chapters on the role of animal population density and the impacts of native herbivores on vegetation and habitats from the tropics to the polar regions. Cyclic mass outbreaks of species such as the larch bud moth in Switzerland, the mountain pine beetle and the African red-billed weaver bird are described and analyzed. Other chapters discuss Zoochory – the dispersal of seeds by ants, mammals and birds – and the influence of burrowing animals on soil development and geomorphology. Consideration extends to the impact of feral domestic animals. Chapter 5 focuses on problems resulting from introduction of alien animals and from re-introduction of animal species to their original habitats, discusses the effects on ecosystems of burrowing, digging and trampling by animals. The author also addresses keystone species such as kangaroo rats, termites and beavers. Chapter 6 addresses the role of animals in landscape management and nature conservation, with chapters on the impact of newcomer species such as animals introduced into Australia, New Zealand and Europe, and the consequences of reintroduction of species to original habitat. It also discusses the carrying capacity of natural habit, public attitudes toward conversation and more. The final section ponders the effects of climate on interactions between animals and their habitats.
Download or read book Protection of Wetlands written by Dave Stute and published by Legislative Reference Bureau. This book was released on 1974 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tailings Dam Incidents written by and published by . This book was released on 1994 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Publications of the Geological Survey written by Geological Survey (U.S.) and published by . This book was released on 1989 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
