000 00305nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aDutta (SK)
245 0 _aBiological Nitrogen Fixation associated with Rice Production
260 _bOxford and IBH
260 _c1991
365 _b395
942 _cBK
999 _c217177
_d217177