Challenge to biologists in the 70's the escalation of food production
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
[Quezon City
National Research Council of the Philippines
1973.]
|
| Cyfres: | The Dr. Gregorio T. Velasquez lecture series, 1972-73
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| Pynciau: |