Philippine Rock Industries, Incorporated grinding rock becomes a successful business venture
| Egile nagusia: | |
|---|---|
| Formatua: | Liburua |
| Hizkuntza: | English |
| Argitaratua: |
[New York]
American Universities Field Staff
c1968.
|
| Saila: | American Universities Field Staff. Southeast Asia series
v. 16, no. 8 |
| Gaiak: |