The bituminous coal industry
Subtitle: the emergence of a social problem
By: by Mary Effie Cameron.
Published: 1939
Language: eng
Format: Microform
Number of pages: 229
Subjects: Coal mines and mining -- United States.; Bituminous coal.
Notes: Vita.

Thesis (Ph. D.)--Cornell University, 1939.

Bibliography: leaves 223-229.

Microfilm. Ithaca, N.Y. : Photo Science of Cornell University, 1974. 1 microfilm reel ; 35 mm.