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Soils
519
Soil surveys
504
Études pédologiques
239
Sols
29
Soil conservation
16
Conservation of natural resources
14
Agricultural conservation
13
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1
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2
3
[Washington, D.C.] : [U.S. Natural Resources Conservation Service], 1992
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4
Bằng Knight, William R.
[Washington, D.C.] : The Service, 1998
[Washington, D.C.] : The Service, 1998
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5
Bằng Smith, Robert V., 1928-
[Washington, D.C.?] : Natural Resources Conservation Service, 2002
[Washington, D.C.?] : Natural Resources Conservation Service, 2002
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6
Bằng Young, Dana
[Washington, D.C.?] : Natural Resources Conservation Service, 2002
[Washington, D.C.?] : Natural Resources Conservation Service, 2002
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7
Bằng Vasilas, L. M. (Lenore Matula)
[Washington, D.C.] : Natural Resources Conservation Service, 2002
[Washington, D.C.] : Natural Resources Conservation Service, 2002
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8
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9
10
11
12
Bằng Blackburn, Paul W.
[Washington, D.C.?] : The Service, 1997
[Washington, D.C.?] : The Service, 1997
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13
14
15
Bằng Salon, Paul A.
[Washington, D.C.?] : U.S. Dept. of Agriculture, Natural Resources Conservation Service, 2012
[Washington, D.C.?] : U.S. Dept. of Agriculture, Natural Resources Conservation Service, 2012
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16
17
18
Denver, CO : U.S. Bureau of Land Management, National Science and Technology Center, Publishing Services, 2006
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19
Bằng Reckendorf, Frank
[Washington, D.C.] : U.S. Dept. of Agriculture, Natural Resources Conservation Service, 1995
[Washington, D.C.] : U.S. Dept. of Agriculture, Natural Resources Conservation Service, 1995
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