Dyfyniad APA

Drew, J. (1967). Selected papers in soil formation and classification. S.S.S.A. Special.

Dyfyniad Arddull Chicago

Drew, J. Selected Papers in Soil Formation and Classification. S.S.S.A. Special, 1967.

Dyfyniad MLA

Drew, J. Selected Papers in Soil Formation and Classification. S.S.S.A. Special, 1967.

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