Time study analyses.

Author: Thoenen, J. R.
Additional Authors: Lintner, E. J.
Year: 1940
Document Type: BMRA
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.23:3502
Series: Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number: 3502
Subject: Quarries and quarrying--Equipment and supplies--Testing
Link: https://hdl.handle.net/2027/mdp.39015078492165

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