Challenge to biologists in the 70's the escalation of food production
| Main Author: | |
|---|---|
| Format: | Book | 
| Language: | English | 
| Published: | [Quezon City
          National Research Council of the Philippines
    
        1973.] | 
| Series: | The Dr. Gregorio T. Velasquez lecture series, 1972-73 | 
| Subjects: |