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Diseases and pests
384
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264
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by Kelly, C. F. (Clarence Francis), 1906-1976
Washington, D.C. : U.S. Dept. of Agriculture, 1941
Washington, D.C. : U.S. Dept. of Agriculture, 1941
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5
by Salmon, S. C. (Samuel Cecil), 1885-1975
Washington, D.C. : U.S. Dept. of Agriculture, 1913
Washington, D.C. : U.S. Dept. of Agriculture, 1913
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6
by Hutchings, Selar S. (Selar Stephen), 1904-
Washington, D.C. : U.S. Dept. of Agriculture, 1953
Washington, D.C. : U.S. Dept. of Agriculture, 1953
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7
by Leukel, R. W.
Washington, D.C. : U.S. Dept. of Agriculture, 1929
Washington, D.C. : U.S. Dept. of Agriculture, 1929
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8
by McClure, H. B. (Harry B.)
Washington, D.C. : U.S. Dept. of Agriculture, 1912
Washington, D.C. : U.S. Dept. of Agriculture, 1912
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9
by Scheffer, Theo. H.
Washington, D.C. : U.S. Dept. of Agriculture, 1914
Washington, D.C. : U.S. Dept. of Agriculture, 1914
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10
by Cochran, P. H.
[Portland, Or.?] : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1984
[Portland, Or.?] : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1984
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11
by Covert, Roy N.
Washington, D.C. : U.S. Dept. of Agriculture, 1917
Washington, D.C. : U.S. Dept. of Agriculture, 1917
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12
by Carson, Ward W.
Portland Or. : Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, Forest Service, 1975
Portland Or. : Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, Forest Service, 1975
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13
by Phillips, Everett Franklin, 1878-1951
Washington, D.C. : U.S. Dept. of Agriculture, 1922
Washington, D.C. : U.S. Dept. of Agriculture, 1922
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14
by Solberg, Erling D. (Erling Day), 1902-
Washington, D.C. : U.S. Dept. of Agriculture, Economic Research Service, 1967
Washington, D.C. : U.S. Dept. of Agriculture, Economic Research Service, 1967
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15
by Leukel, R. W.
Washington, D.C. : U.S. Dept. of Agriculture, 1955
Washington, D.C. : U.S. Dept. of Agriculture, 1955
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17
by Struble, George R., 1904-
Washington, D.C. : U.S. Dept. of Agriculture, 1955
Washington, D.C. : U.S. Dept. of Agriculture, 1955
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18
by Goble, Jesse W.
Washington, D.C. : Agricultural Research Service, 1974
Washington, D.C. : Agricultural Research Service, 1974
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19
by Perkins, Fred W. (Frederick Wallace), 1890-
Washington, D.C. : U.S. Dept. of Agriculture, 1920
Washington, D.C. : U.S. Dept. of Agriculture, 1920
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20
by Reed, W. D. (William Doyle), 1897-
Washington, D.C. : U.S. Dept. of Agriculture, 1937
Washington, D.C. : U.S. Dept. of Agriculture, 1937
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