Author
United States Department of Agriculture
276
USA Congress House of Representatives
49
United States Department of Agriculture. Bureau of Chemistry
42
USA Department of Agriculture
33
USA Office of Experiment Stations
30
Lawes, John Bennet
29
USA Division of Forestry
24
Agricultural and Mechanical College of Texas
23
Netherlands. Ministry of agriculture, industry and commerce. Commercial department
21
USA Section of Foreign Markets
21
USA Office of Road Inquiry
20
Howard, Leland Ossian
18
USA Division of Entomology
18
Hitchcock, Frank Harris
15
Galloway, Beverly Thomas
14
United States. Department of Agriculture
14
Lantz, David E.
13
Young, Arthur 1741-1820
13
Hopkins, Cyril George
12
Marlatt, Charles Lester
12
United States. Congress. House of Representatives
12
American Agricultural Chemical Co
10
Card, Fred W.
10
Federal Board for Vocational Education
10
India Department of Revenue and Agriculture
10
Lyon, T. L. 1869-1938
10
U.S. Department of Agriculture. Division of Biological Survey
10
U.S. Department of Agriculture. States Relations Service
10
Watt, George
10
Bailey, Vernon
9
Chittenden, F. H.
9
Corbett, Lee C.
9
U.S. Department of Agriculture. Division of Ornithology and Mammalogy
9
USA Weather Bureau
9
Barrows, Walter Bradford
8
Butler, Edwin John, 1874-1943
8
Tolley, Howard Ross, 1889-1958
8
Beal, Foster Ellenborough Lascelles
7
Gould, Harris Perley
7
Morse, W. J.
7
Rogers, James E. Thorold
7
Spojené státy americké. Forest Service
7
Steuart, James
7
Swingle, Walter T.
7
Texas Agricultural Experiment Station. Division of Chemistry
7
United States. Department of Agriculture. Weather Bureau
7
Webber, Herbert John
7
Ashbrook, F. G.
6
Atwater, Wilbur Olin
6
Bioletti, Frederic T.
6
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