Economic consequences of the seven hour day and wage changes in the bituminous coal industry
By: Waldo E. Fisher.
Series: Research studies / Industrial Research Dept., Wharton School of Finance and Commerce, University of Pennsylvania -- 32; Major Industrial Research Unit studies -- no. 32.
Publisher: University of Pennsylvania Press
Published: 1939
Place of publication: Philadelphia
Language: eng
Format: Microform
Number of pages: 130
Subjects: Coal mines and mining -- United States.; Bituminous coal.; Coal trade -- United States.
Notes: Thesis (Ph. D.)--University of Pennsylvania, 1939.

Includes index.

Microfilm. Philadelphia : University of Pennsylvania Library, [1974?]. 1 microfilm reel : negative ; 35 mm.