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Industrial instruments and changing technology,
by George Perazich, Herbert Schimmel and Benjamin Rosenberg.

APA Citation

Perazich, G., Rosenberg, B., Schimmel, H. (1938). Industrial instruments and changing technology. Philadelphia: W.P.A., Nat. research project.

MLA Citation

Perazich, George, Benjamin Rosenberg, and Herbert Schimmel. Industrial Instruments And Changing Technology. Philadelphia: W.P.A., Nat. research project, 1938.

Warning: These citations may not always be complete (especially for serials).