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Soils
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1
著者: Rasmussen, Jack J.
[Washington] : U.S. Dept. of Agriculture, Soil Conservation Service, 1976
[Washington] : U.S. Dept. of Agriculture, Soil Conservation Service, 1976
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政府資料
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2
3
4
著者: Beers, F. W. (Frederick W.)
Erie, Pa. : Erie Society for Genealogical Research, 1991
Erie, Pa. : Erie Society for Genealogical Research, 1991
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地図
5
著者: Hersh, Donald Mench, 1917-
[Washington] : U.S. Dept. of Agriculture, Soil Conservation Service, 1963
[Washington] : U.S. Dept. of Agriculture, Soil Conservation Service, 1963
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6
著者: Speir, Reginald, 1920-
[Washington] : U.S. Soil Conservation Service : [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1967
[Washington] : U.S. Soil Conservation Service : [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1967
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7
著者: Tregear, T. R. (Thomas R.)
[Hong Kong] : Hong Kong University Press, 1955
[Hong Kong] : Hong Kong University Press, 1955
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図書
8
Bureau of Chemistry and Soils, 1933
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図書
9
10
著者: Byrd, Huger S. (Huger Strickland), 1907-
[Washington] : U.S. Soil Conservation Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1972
[Washington] : U.S. Soil Conservation Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1972
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11
12
著者: Carter, John B. (John Benjamin), 1923-, Wills, J. W., Cummins, W. E.
[Washington] : U.S. Soil Conservation Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1971
[Washington] : U.S. Soil Conservation Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1971
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13
著者: Goke, Alwin William, 1895-
United States Department of Agriculture, 1932
United States Department of Agriculture, 1932
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図書
14
著者: Taylor, Arthur E. (Arthur Elijah), 1877-
[Washington : GPO, 1933
[Washington : GPO, 1933
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図書
15
16
Net change in forest density, 1873-2001 : using historical maps to monitor long-term forest trends /
著者: Liknes, Greg C., Nelson, Mark D. (Research forester), Kaisershot, Daniel J.
Newtown Square, PA : U.S. Forest Service, 2013
Newtown Square, PA : U.S. Forest Service, 2013
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17
著者: Coleman, Clarence Samuel
Washington, U.S. Govt. Print. Off.] 1952
Washington, U.S. Govt. Print. Off.] 1952
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18
著者: Brubacher, John I., Moore, Tom R.
[Washington] : U.S. Soil Conservation Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1969
[Washington] : U.S. Soil Conservation Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1969
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19
著者: Delaney, Gary J.
[Washington] : [U.S. Govt. Print. Off.], 1975
[Washington] : [U.S. Govt. Print. Off.], 1975
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20
著者: Lockridge, L. Dale
[Washington] : Soil Conservation Service, 1979
[Washington] : Soil Conservation Service, 1979
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