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Soils of New Hampshire
S. A. L. Pilgrim · New Hampshire Agricultural Experiment Station, University of New Hampshire
79 sayfa · 1979
Soils
Soil survey, Pulaski County, Indiana
S. A. L. Pilgrim · U.S. Dept. of Agriculture, Soil Conservation Service; [for sale by the Supt. of Docs. U.S. Govt. Print. Off.]
84 sayfa · 1968
Soil surveys / Sols