Lesson helps in agricultral geology, for use with Emerson's Agricultural geology (Wiley & sons) by John E. Smith.
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TextPublication details: [Ames, Iowa?] 1936.Description: 48 p. illus. (map) 23 cmSubject(s): LOC classification: - QE33 .S57
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"References": p. 8, 42-43.
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