000 | 00327nam a2200121Ia 4500 | ||
---|---|---|---|
008 | 191031s9999 xx 000 0 und d | ||
100 | _aAyanaba (A) and Dart (RJ) | ||
245 | 0 | _aBiological ntrogen fixation in farming systems of the rropics | |
260 | _b"John witely, USA" | ||
260 | _c1977 | ||
365 | _b41.50 | ||
942 | _cBK | ||
999 |
_c203485 _d203485 |