Παραπομπή APA

Zimmermann, E. W. (1951). World resources and industries: A functional appraisal of the availability of agricultural and industrial materials (Revised edition.). New York: Harper & Brothers.

Παραπομπή Chicago Style

Zimmermann, Erich W. World Resources and Industries: A Functional Appraisal of the Availability of Agricultural and Industrial Materials. Revised edition. New York: Harper & Brothers, 1951.

Παραπομπή MLA

Zimmermann, Erich W. World Resources and Industries: A Functional Appraisal of the Availability of Agricultural and Industrial Materials. Revised edition. New York: Harper & Brothers, 1951.

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