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Author: William Bonar Bell
Publisher:
ISBN:
Category : Waterfowl
Languages : en
Pages : 20
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Book Description
Author: William Bonar Bell
Publisher:
ISBN:
Category : Waterfowl
Languages : en
Pages : 20
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Book Description
Author: E. A. Preble
Publisher:
ISBN:
Category :
Languages : en
Pages : 18
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Book Description
Author: William Bonar Bell
Publisher: Forgotten Books
ISBN: 9780331405385
Category :
Languages : en
Pages : 24
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Book Description
Excerpt from Status of Waterfowl in 1934 A long period of deficient precipitation over hundreds of thousands of square miles of the finest breeding territory in the North Central States and the southern parts of the Prairie Provinces of Canada began in 1915. With the exception of a slightly increased rainfall in 1920, this shortage continued till 1934, when all available records for duration of time, extent of territory affected, and severity of drought conditions were broken. Serious drought conditions have arisen periodically throughout recorded history, always doubtless working hardships upon the waterfowl. But never, so far as is known, have there been so many destructive conditions and agencies at work at once upon a depleted waterfowl supply as during the past 5 years. During that period the numbers of waterfowl have fallen drastically. The support and interest of all public-spirited citizens are now needed to repair the damage. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: United States. Bureau of Biological Survey
Publisher:
ISBN:
Category : Waterfowl
Languages : en
Pages : 17
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Book Description
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 2660
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Book Description
Author: United States. Congress. Senate. Special Committee on Conservation of Wildlife Resources
Publisher:
ISBN:
Category : Wildlife conservation
Languages : en
Pages : 544
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Book Description
Author: United States. Department of Agriculture. Division of Publications
Publisher:
ISBN:
Category :
Languages : en
Pages : 532
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Author: United States. Department of Agriculture. Division of Publications
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 538
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Author: United States. Bureau of Biological Survey
Publisher:
ISBN:
Category :
Languages : en
Pages : 1
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Author: Malcolm Edwin McDonald
Publisher:
ISBN:
Category : Anatidae
Languages : en
Pages : 704
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Book Description
This is a revision of the catalogue published in 1965 (McDonald, 1965, Wildlife Disease No. 46, 7 microfiche, 392 pages). This revision includes new material (data from 560 additional references, with 154 additional parasites) and a number of corrections. This catalogue summarizes the information available on each helminth reported as a parasite of waterfowl ("waterfowl" is used here as a term for the Anatidae only): the names applied to it, its life history, hosts, location in the host, geographical distribution, frequency of record in waterfowl, and importance as a cause of disease. This paper is incomplete in certain respects; no general catalogue can include all the pertinent literature of the world and new information is constantly being added. About 120 papers each year record data and describe about 15 new species of helminths in waterfowl.
