000 00334nam a2200121Ia 4500
008 140113s9999 xx 000 0 und d
082 _a631.84:582.232 K1
100 _a"Singh, R.N."
245 _aRole of blue green algae in nitrogen economy of Indian Agriculture
260 _a1961
_bICAR
_cNew Delhi
300 _a175
942 _cBK
999 _c57046
_d57046