| 000 | 00516nam a2200097Ia 4500 | ||
|---|---|---|---|
| 008 | 120223s9999 xx 000 0 und d | ||
| 082 | _a574.929 SYM | ||
| 100 | _aSymposium on Conservation and Productivity of Natural Waters | ||
| 245 | _aConservation and productivity of natural waters | ||
| 260 |
_bAcademic Press _aLondon _c1972 |
||
| 999 |
_c152450 _d152450 |
||