Project aqua a source book of inland waters proposed for conservation
| Egile nagusia: | |
|---|---|
| Beste egile batzuk: | |
| Formatua: | Liburua |
| Hizkuntza: | English |
| Argitaratua: |
London
International Biological Programme
c1971.
|
| Saila: | IBP Handbook no. 21
|
| Gaiak: |