| 000 | 00317nam a2200097Ia 4500 | ||
|---|---|---|---|
| 008 | 120224s9999 xx 000 0 und d | ||
| 082 |
_a581.133 _bBER |
||
| 100 | _aBergersen, F.J. | ||
| 245 | _aCentury of nitrogen fixation research : present startus and future prospects | ||
| 260 |
_bRoyal Society _aLondon _c1987 |
||
| 999 |
_c133376 _d133376 |
||