000
00305nam a2200121Ia 4500
008
191031s9999 xx 000 0 und d
100
_a
Dutta (SK)
245
0
_a
Biological Nitrogen Fixation associated with Rice Production
260
_b
Oxford and IBH
260
_c
1991
365
_b
395
942
_c
BK
999
_c
217177
_d
217177