Download or read book Entomological E series Publications 495 to 738 written by and published by . This book was released on 1948 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Entomological E series Publications 495 to 738 written by United States. Bureau of Entomology and Plant Quarantine. Division of Insect Pest Survey and Information and published by . This book was released on 1948 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book List of Entomological E series Publications 739 to 781 written by and published by . This book was released on 1949 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book E series Circulars written by United States. Bureau of Entomology and Plant Quarantine and published by . This book was released on with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book E written by United States. Entomology Research Division and published by . This book was released on 1949-04 with total page 1050 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cumulative Title Index to United States Public Documents 1789 1976 written by Daniel W. Lester and published by . This book was released on 1980 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book United States Government Publications Monthly Catalog written by and published by . This book was released on 1948 with total page 1606 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalogue of Publications Issued by the Government of the United States written by United States. Superintendent of Documents and published by . This book was released on 1913 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt: February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1948-07 with total page 1140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Status of Pollinators in North America written by National Research Council and published by National Academies Press. This book was released on 2007-05-13 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pollinators-insects, birds, bats, and other animals that carry pollen from the male to the female parts of flowers for plant reproduction-are an essential part of natural and agricultural ecosystems throughout North America. For example, most fruit, vegetable, and seed crops and some crops that provide fiber, drugs, and fuel depend on animals for pollination. This report provides evidence for the decline of some pollinator species in North America, including America's most important managed pollinator, the honey bee, as well as some butterflies, bats, and hummingbirds. For most managed and wild pollinator species, however, population trends have not been assessed because populations have not been monitored over time. In addition, for wild species with demonstrated declines, it is often difficult to determine the causes or consequences of their decline. This report outlines priorities for research and monitoring that are needed to improve information on the status of pollinators and establishes a framework for conservation and restoration of pollinator species and communities.
Download or read book University of California Publications in Entomology written by University of California (1868-1952) and published by . This book was released on 1917 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Developments in the Biology of Chrysomelidae written by Pierre Jolivet and published by BRILL. This book was released on 2021-10-25 with total page 824 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes what is actually known about the biology of Leaf Beetles. It is the most recent study in the field. As we are well aware, Chrysomelidae, one of the three largest families of beetles, are of great economic importance since they can be a serious pest to crops or, on the other hand, can be used to destroy imported weeds. This is due to the selectivity of their feeding preferences. In this way, Chrysomelidae are an invaluable tool for studying plant selection mechanisms. The many and varied topics dealt with in this book cover almost all aspects of phylogeny, classification, paleontology, parasitology, biogeography, defenses, population biology, genetics and biological control as well as many other subjects. The most renowned specialists in these fields have been chosen to put together a diverse, state-of-the-art publication. Few beetle families have been studied in such detail as the Chrysomelids. This is not only due to their economic importance, but also to their incredible variety of forms and behaviors. There are no less than 40,000 species currently in existence worldwide, but probably 100,000 species have existed since the Jurassic, when they first came into being with the Cycadoids and other primitive plant families, later to diversify during the Cretaceous with the advent of flowering plants.
Download or read book Country Gentleman the Magazine of Better Farming written by and published by . This book was released on 1886 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalogue of the Public Documents of the Congress and of All Departments of the Government of the United States for the Period from to written by and published by . This book was released on 1909 with total page 1808 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalogue of the Public Documents of the the Fifty third Congress to the 76th Congress and of All Departments of the Government of the United States written by United States. Superintendent of Documents and published by . This book was released on 1896 with total page 1804 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalogue of the Public Documents of the Congress and of All Departments of the Government of the United States written by United States. Superintendent of Documents and published by . This book was released on 1963 with total page 1806 pages. Available in PDF, EPUB and Kindle. Book excerpt:
