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Creator Personal Names
Marten, E. A.
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Creator Personal Names
Pohlman, G. G. (George Gordon), 1902-
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All Creators
Marten, E. A.
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All Creators
Pohlman, G. G. (George Gordon), 1902-
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Subject Topical
Humus.
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Subject Topical
Soil chemistry.
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Subject Topical
Soil microbiology.
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