Coal in 1915 part A. production.
Lesher, C. E.
Coal in 1915 part A. production. - Washington, D.C. Government Printing Office 1916 - pp. 345-431 - Mineral Resources of the United States, 1915-Part II .
Impreso
Ingles
MINERIA
CARBON
PRODUCCION DE CARBON
553.2
Coal in 1915 part A. production. - Washington, D.C. Government Printing Office 1916 - pp. 345-431 - Mineral Resources of the United States, 1915-Part II .
Impreso
Ingles
MINERIA
CARBON
PRODUCCION DE CARBON
553.2