World food resources and population the narrowing margin
| Egile nagusia: | |
|---|---|
| Formatua: | Liburua |
| Hizkuntza: | English |
| Argitaratua: |
Washington
Population Reference Bureau
1981.
|
| Saila: | Population bulletin-Population Reference Bureau
v.36, no. 3 |
| Gaiak: |