Proceedings of the Seventh Annual Meeting ... 1-3 November 1979 ... Ed. [by] J.D. Falk
Author : Joyce Duncan Falk
Publisher :
Page : pages
File Size : 10,42 MB
Release : 1981
Category :
ISBN :
Author : Joyce Duncan Falk
Publisher :
Page : pages
File Size : 10,42 MB
Release : 1981
Category :
ISBN :
Author : Lal C. Chugh
Publisher :
Page : 139 pages
File Size : 12,35 MB
Release : 1979
Category : Industries
ISBN :
Author :
Publisher :
Page : 500 pages
File Size : 49,25 MB
Release : 1995
Category : Polycyclic aromatic hydrocarbons
ISBN :
Author :
Publisher :
Page : 336 pages
File Size : 27,9 MB
Release : 2000
Category : Health promotion
ISBN :
Author : European Commission. Scientific Committee on Food
Publisher :
Page : 478 pages
File Size : 50,16 MB
Release : 2006
Category : Dietary supplements
ISBN : 9789291990146
Author : National Research Council
Publisher : National Academies Press
Page : 327 pages
File Size : 19,77 MB
Release : 2007-05-13
Category : Technology & Engineering
ISBN : 0309102898
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.
Author : IUCN/SSC Tortoise and Freshwater Turtle Specialist Group
Publisher : IUCN
Page : 210 pages
File Size : 27,57 MB
Release : 1989
Category : Nature conservation
ISBN : 2880329868
Author : Steven M. Teutsch
Publisher : Oxford University Press, USA
Page : 422 pages
File Size : 10,39 MB
Release : 2000
Category : Medical
ISBN : 0195138279
"This text presents an organized approach to planning, developing, and implementing public health surveillance systems. It has a broad scope, discussing legal and ethical issues as well as technical problems"--Jacket cover.
Author : United States. Navy Dept. Bureau of Medicine and Surgery
Publisher :
Page : 60 pages
File Size : 15,62 MB
Release : 1963
Category : Naval hygiene
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Author : National Library of Medicine (U.S.)
Publisher :
Page : 1044 pages
File Size : 50,86 MB
Release :
Category : Medicine
ISBN :