Author : Hugo W. Nilson
Publisher :
Page : 64 pages
File Size : 14,85 MB
Release : 1942
Category : Agricultural pests
ISBN :
The white-necked raven (Corvus cryptoleucus), a close relative of the common crow, is indigenous to southwestern United States. Because in parts of its range it has gained the same ill repute as acquired by the crow and magpie in their respective ranges, a 5-year detailed study of its activities and food habits was made, during which many field data were gathered, and the contents of 827 stomachs were analyzed.
Author : U.S. Fish and Wildlife Service
Publisher :
Page : 1256 pages
File Size : 33,5 MB
Release : 1941
Category :
ISBN :
Author :
Publisher :
Page : 68 pages
File Size : 25,57 MB
Release : 1942
Category : Animals
ISBN :
Author : United States. Bureau of Sport Fisheries and Wildlife
Publisher :
Page : 866 pages
File Size : 11,41 MB
Release : 1941
Category : Fisheries
ISBN :
Author :
Publisher :
Page : 174 pages
File Size : 19,36 MB
Release : 1987
Category : Wildlife conservation
ISBN :
A bibliography comprising annotated citations of 2037 scientific and technical publications from ten series issued by the U.S. Fish and Wildlife Service. Includes a six-page introduction containing a history of the Service and a description of the research and development series.
Author :
Publisher :
Page : 238 pages
File Size : 11,10 MB
Release : 1987
Category : Fisheries
ISBN :
Author :
Publisher :
Page : 424 pages
File Size : 17,9 MB
Release : 1987
Category : Wildlife conservation
ISBN :
Author : United States. Wildlife Research Laboratory, Denver
Publisher :
Page : 22 pages
File Size : 14,61 MB
Release : 1952
Category : Zoology, Economic
ISBN :
Author : Alexander Campbell Martin
Publisher : Courier Corporation
Page : 514 pages
File Size : 32,37 MB
Release : 1961-01-01
Category : Nature
ISBN : 0486207935
'Prepared under the direction of the United States Fish and Wildlife Service, Department of the Interior, at the Patuxent Research Refuge, Laurel, Maryland.'
Author :
Publisher :
Page : 678 pages
File Size : 45,33 MB
Release : 1939
Category : Animals
ISBN :
