Technical change in the bituminous coal industry, 1919-1954
By: by G.S. Maddala.
Published: 1963
Language: eng
Format: Microform
Number of pages: 87
Subjects: Bituminous coal.; Coal mines and mining.
Notes: Thesis (Ph. D.)--University of Chicago, 1964.

Bibliography: leaves 85-87.

Microfilm. Chicago : Dept. of Photoduplication, University of Chicago Library, 1963. 1 microfilm reel ; 35 mm.