TY  - BOOK
AU  - Wirkus,Winifred Lydia
TI  - History of the mining industry in the Philippines: 1898-1941 
PY  - 1974///
CY  - Ann Arbor, Mich.
PB  - University Microfilms International
KW  - Mines and mineral resources
KW  - Philippines
KW  - History
N1  - Thesis (Ph.D.) - Cornell University, 1974
ER  -