Carnotite resources of the Georgetown group of claims, San Miguel County, Colorado
Alfred Lerner Bush, L.S. Hilpert, R. D. Trace
1950, Trace Elements Investigations 116
No abstract available....
Carnotite resources of the Ellison and Burro claims, San Miguel County, Colorado
Charles Francis Withington, Alfred Lerner Bush
1950, Trace Elements Investigations 115
No abstract available....
What counts in a more-game program?
D.L. Allen
1950, Wisconsin Conservation Bulletin (15) 3-13
Gadwall nesting in Maryland
P. F. Springer, R. E. Stewart
1950, The Auk (67) 234-235
Toxicity and repellency to rats of actidione
R. Traub, J.B. DeWitt, J.F. Welch, D. Newman
1950, Journal of the American Pharmaceutical Association, Scientific Edition (39) 552-555
The antibiotic actidione was found to be highly repellent to laboratory rats and to significantly reduce gnawing attacks upon treated paperboards. Rats refused to accept food or water containing this material even under conditions of acute starvation and died of starvation and thirst rather than accept water containing 1.0 mg. of...
Fourteenth breeding-bird census. 22. General farm land
R. E. Stewart, M.B. Meanley
1950, Audubon Field Notes (4) 305
Rat deterrents for paper packages
J.F. Welch, J.B. DeWitt, E. Bellack
1950, Soap and Sanitary Chemicals (26) 122-124,
A report of the study to develop a treatment for paper and fabricating materials which will prevent or minimize damage be commensal rodents to stored package goods....
[Book review] The Saga of the Waterfowl, by Martin Bovey
R. E. Stewart
1950, Atlantic Naturalist (5) 235-236
Birds of the season
C.S. Robbins
1950, Wood Thrush (5) 126-127
The season--September and October 1950
C.S. Robbins
1950, Maryland Birdlife (6) 55-58
The season--May, June, July, and August 1950
C.S. Robbins
1950, Maryland Birdlife (6) 47-52
A rare color phase of the song sparrow
E. Arnold, S.H. Low
1950, Atlantic Naturalist (6) 23
Snowy owls were recorded on 58 Christmas counts this year [map]
C.S. Robbins
1950, Audubon Field Notes (4) 65
Notes on some winter birds of north central New Mexico
R. W. Allen
1950, The Auk (67) 252-253
The observations recorded below were made in Santa Fe, Sandoval and Rio Arriba counties during the winter of 1939-1940. Occasional specimens, 54 in all, collected for racial identification, are deposited in the Museum of Zoology, University of Michigan....
Hawks over Maryland, fall of 1949
C.S. Robbins
1950, Maryland Birdlife (6) 2-11
The genus Acroricnums in America (Hymenoptera, Ichneumonidae)
R.T. Mitchell
1950, Annals of the Entomological Society of America (43) 249-261
This paper is a revision of the known species of A croricnus of America. Of the five previously described species assigned to this genus from this area, four are reduced to subspecific rank under the European genotype, A croricnus stylator (Thunberg). Three subspecies and one species are described as new, and typical stylator is recorded from...
Distribution of North American birds: Winter distribution of the sora
C.S. Robbins
1950, Audubon Field Notes (4) 40
Preliminary map showing the winter distribution of the king rail (Rallus elegans elegans)
C.S. Robbins
1950, Audubon Field Notes (4) 308
The changing seasons: A summary of the spring migration
C.S. Robbins
1950, Audubon Field Notes (4) 231-233
Quail studies on a river floodplain
W. Rosene
1950, Journal of Soil and Water Conservation (5) 11-114
Sportsmen: Are you being shortchanged?
D.L. Allen
1950, Outdoor Life (106) 64-65
Island pheasant festival
D.L. Allen
1950, Outdoor Life (105) 34
Fantastic shooting, full bags are a joy to sportsmen, and a boon to researchers trying to find out what makes Pelee tick. [Pelee is a Canadian island in Lake Erie, 20 miles north of Sandusky, OH.]...
Red-winged blackbird fourteen years old
S.H. Low
1950, Bird-Banding (21) 115-115
No abstract available. ...
Waterfowl habitat improvement on Reelfoot Lake
J.H. Steenis
1950, Journal of the Tennessee Academy of Science (25) 56-64
Black vultures in western Pennsylvania
C.S. Robbins
1950, The Wilson Bulletin (62) 36