The Key to Philippine forest conservation the defense of the dipterocarps.
| Format: | Book | 
|---|---|
| Language: | English | 
| Published: | Manila
          Columbian Publishing Corporation
    
        1984 | 
| Subjects: | 
| Format: | Book | 
|---|---|
| Language: | English | 
| Published: | Manila
          Columbian Publishing Corporation
    
        1984 | 
| Subjects: |