Introduction to world resources / [by] Erich W. Zimmermann ; edited by Henry L. Hunker.
By: Zimmermann, Erich W. (Erich Walter), 1888- Zimmermann, Erich W. (Erich Walter), 1888-.
Contributor(s): Zimmermann, Erich W. (Erich Walter), 1888- World resources and industries. Zimmermann, Erich W. (Erich Walter), 1888- World resources and industries. Zimmermann, Erich W. (Erich Walter), 1888- World resources and industries.
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