Bulletin (United States. Bureau of Animal Industry). no. 127, 1911 PDF Download
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Author:
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Category :
Languages : en
Pages : 138
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Author:
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ISBN:
Category :
Languages : en
Pages : 138
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Author:
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Category :
Languages : en
Pages : 84
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Author:
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Category :
Languages : en
Pages : 52
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Author:
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Category :
Languages : en
Pages : 36
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Author: United States. Government Printing Office
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Category : Government publications
Languages : en
Pages : 596
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Author: South Africa. Division of Veterinary Services and Animal Industry
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Category : Veterinary medicine
Languages : en
Pages : 1028
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Author: Benjamin Mott Underhill
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Category : Domestic animals
Languages : en
Pages : 422
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First paragraph of Preface: In the preparation of this work the author has aimed to present clearly, concisely, and in orderly manner such matter pertaining to the subject at hand as seems most essential to the needs of the student and the practitioner. Notwithstanding its elementary character, the present rapid advances in parasitology have necessitated numerous changes and additions to the manuscript during its preparation. New species and unsettling facts and theories as to some which are not new are, in these days of intensive research, frequently being brought to light and reported upon. Some of these findings represent or lead to a distinct advance and, though the observations be in certain cases upon obscure and in themselves unimportant species, they may, by analogy, shed valuable light upon life histories and modes of infection of related forms known to be injurious to domestic animals and man. So frequent are these steps forward that it might almost seem better to leave comparative parsitology at the present time to the fragmental attention it has mainly received, and possibly it is to this view that the lack of a recent American volume upon the subject may be attributed. Be that as it may, this book is not intended to be comprehensive, and it contains but little discussion, historical or otherwise, of investigations in the field of medical zoology, -limitaions which may, in measure, contribute to it a longer period of usefulness in its present form than could be hoped for in an exhaustive treatise. With but few exceptions, the parasites considered are those most likely to be met with and as to which most of the facts pertaining to their biology and pathogenicity have been well established.
Author: Ohio Agricultural Experiment Station
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Category :
Languages : en
Pages : 624
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Author: South Africa. Director of Veterinary Services and Animal Industry
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Category :
Languages : en
Pages : 902
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Author: Massachusetts Horticultural Society. Library
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Category : Gardening
Languages : en
Pages : 382
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