00452nam a2200133Ia 4500008004100000082002400041100001800065245007100083260002600154300000800180942000700188952010600195999001700301140113s9999    xx            000 0 und d  a631.84:582.232   K1  a"Singh, R.N."  aRole of blue green algae in nitrogen economy of Indian Agriculture  a1961bICARcNew Delhi  a175  cBK  00104070aVTLbVTLd2014-01-13l0o631.84:582.232   K1pVBK368r2014-01-13 00:00:00w2014-01-13yBK  c57046d57046