Showing 1 - 4 of 4
Persistent link: https://www.econbiz.de/10002039612
Persistent link: https://www.econbiz.de/10002039621
Burgess, Blandford C.: The Calumpan clay deposits. Batangas and the Angat clay area, Bulacan. Publ. by Philippine Bureau of Mines, in cooperation with the Philippine Council for United States Aid and the U.S. International Cooperation Administration. Manila, april 1960. 9 S., 1 Kartenskizze
Persistent link: https://www.econbiz.de/10002039597