| 000 | 00340nam a2200121Ia 4500 | ||
|---|---|---|---|
| 008 | 180611s9999||||xx |||||||||||||| ||und|| | ||
| 041 | _aen | ||
| 082 | _a574.929 | ||
| 100 | _aHELLAEWELL J.M. | ||
| 245 | 0 | _aBiological indicators of Freshwater Pollution and Environmental Management. | |
| 260 |
_aNewyork _bElsevier sc.pub. _c1989 |
||
| 942 | _cLL | ||
| 999 |
_c5801 _d5801 |
||