000 00462nam a2200181Ia 4500
008 131223s9999 xx 000 0 und d
040 _aISI KOLKATA
041 _aEnglish
082 _a631.847
_bSi617
100 _aSingh R N
245 _aRole of blue-green algae in nitrogen economy of Indian agriculture
260 _aNew Delhi
_bICAR
_c1961
300 _a175p.
650 _aAgriculture
650 _aIndia
650 _aNitrifying crops
942 _cBK
999 _c51406
_d51406