Mechanization in selected industries
Subtitle: brick, cement, lumber.
Published: 1939
Place of publication: [Philadelphia
Language: eng
Subjects: Machinery in the workplace.; Brickmaking.; Cement industries.; Lumbering -- United States.
Notes: Title from cover.
Reproduced from type-written copy.
"This volume contains WPA National research project reports nos. M-2, M-3, and M-5."