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World resources and industries : a functional appraisal of the availability of agricultural and industrial materials / by Erich W. Zimmermann.
- 333.7 Z73
- Zimmermann, Erich W. 1888-
- Harper & Brothers,
- [1951]
- New York :
-
World resources and industries : a functional appraisal of the availability of agricultural and industrial resources / by Erich W. Zimmermann.
- 333.7 Z73 1933
- Zimmermann, Erich W. 1888-
- Harper & Brothers,
- 1933.
- New York :