Fifteenth breeding-bird census. 23. Scrub spruce bog
C.S. Robbins, R. E. Stewart
1951, Audubon Field Notes (5) 325
Fifteenth breeding bird census: Mixed northern hardwood, spruce-fir forest
J.B. Cope, M.M. Hensley
1951, Audubon Field Notes (5) 318
The woods is full of 'em!
D.L. Allen
1951, Field and Stream (56) 32-33,
Fifteenth breeding-bird census. 13. Mature northern hardwood forest
C.S. Robbins, R. E. Stewart
1951, Audubon Field Notes (5) 320-321
A new swamp sparrow from the Maryland coastal plain
G.M. Bond, R. E. Stewart
1951, The Wilson Bulletin (63) 38-40
The season--January and February, 1951
C.S. Robbins
1951, Maryland Birdlife (7) 38-40
Further data on removal and repopulation of the breeding birds in a spruce-fir forest community
M.M. Hensley, J.B. Cope
1951, The Auk (68) 483-493
During June and July of 1950 the writers were engaged in a study of bird populations in northern Maine in conjunction with investigations to determine the effectiveness of the breeding bird population as a controlling agent of the spruce budworm, Choristoneura fumiferana. The field work was started in 1949 and...
Upland game in 1951--and a look at things to come
D.L. Allen
1951, Field and Stream (56) 36-38,
Effects of DDT on saltmarsh wildlife: 1949
P. F. Springer, J.R. Webster
1951, Special Scientific Report - Wildlife 10
Briefly describes DDT experimental spraying program, wildlife species studied, the marsh, and tidal movements. Discusses resulting effects of DDT on vertebrates and invertebrates....
Chronic toxicity of some new insecticides to bobwhite quail
J.P. Linduska, P. F. Springer
1951, Special Scientific Report - Wildlife 9
Presents and discusses results of toxicity studies on northern bobwhite (Colinus virginianus). Compounds tested were chlordane, toxaphene, DDT, benzene hexachioride, methoxychior, TDE (Rhothane}, and parathion....
Ringneck pheasant management
F.H. Dale
1951, Wildlife Leaflet 332
Bobwhite propagation and management
F.H. Dale
1951, Wildlife Leaflet 335
Birds as a factor in controlling insect depredations
C. Cottam, F.M. Uhler
1951, Wildlife Leaflet 224 (reissued)
Food of game ducks in the United States and Canada
A. C. Martin, F.M. Uhler
1951, Research Report No. 30
Maryland and the District of Columbia
R. E. Stewart, C.S. Robbins
1951, Book chapter, A Guide to Bird Finding East of the Mississippi
Marshes
R. E. Stewart
S.A. Briggs, C.S. Robbins, editor(s)
1951, Book chapter, Where Birds Live: Habitats in the Middle Atlantic States
Bays and estuaries
R. E. Stewart
S.A. Briggs, C.S. Robbins, editor(s)
1951, Book chapter, Where birds live: Habitats in the Middle Atlantic States
Ponds and rivers
S.H. Low
Shirley A. Briggs, Chandler S. Robbins, editor(s)
1951, Book chapter, Where birds live: Habitats in the Middle Atlantic States
Where Birds Live: Habitats in the Middle Atlantic States
S.A. Briggs, C.S. Robbins, editor(s)
1951, Book
Wildlife Review No. 52 through No. 66
N. Hotchkiss, editor(s)
1951, Book
No abstract available....
Bird Migration Memorandum No. 8
C.S. Robbins
1951, Book
American wildlife and plants
A. C. Martin, H.S. Zim, A.L. Nelson
1951, Book
Reconnaissance of radioactive rocks of Vermont, New Hampshire, Connecticut, Rhode Island and southeastern New York
Francis Alexander McKeown
1951, Trace Elements Investigations 67
Reconnaissance examination for uranium at six mines and properties in Idaho and Montana
John Stewart Vhay
1951, Trace Elements Memorandum 30-A
Six mining properties in Idaho and Montana at which radioactivity had been reported or suspected were briefly examine by J.S. Vhay and W.A. Roberts of the U.S. Geological Survey in October and November 1949. The properties in Idaho are the Grunter mine, from which radio-active mill concentrates have been reported; the...
Stratigraphic sections of the Phosphoria formation in Wyoming
V.E. McKelvey, L.E. Smith, R.A. Hoppin, F.C. Armstrong
1951, Open-File Report 51-18-D
The first of a series of reports giving detailed stratigraphic sections of the Phosphoria formation in the Western phosphate field as measured and described by the Geological Survey will be released as Circulars within the next few months. Because of the needs of industry for many of these data during...