Placer operations of North Mindanao Mining Co., Surigao, Mindanao
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Book |
| Language: | English |
| Published: |
Manila
Bureau of Print.
1939.
|
| Series: | Philippines (Commonwealth) Bureau of Mines Information circular
no.1 |
| Subjects: |