| 000 | 00516nam a2200097Ia 4500 | ||
|---|---|---|---|
| 008 | 120223s9999 xx 000 0 und d | ||
| 082 | _a574.133 BER | ||
| 100 | _aBergersen, F.J. | ||
| 245 | _aMethods for evaluating biological nitrogen fixation. | ||
| 260 |
_bJohn Wiley _aChichester _c1980 |
||
| 999 |
_c152880 _d152880 |
||