00372nam a2200133Ia 45000030006000000080041000060400015000471000016000622450071000782500010001492600050001595460012002090050017002210STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aSingh, R.N.  aRole of blue green algae in nitrogen economy of Indian agriculture  aFirst  bIndian Council of Agricultural Researchc1961  aEnglish20220125170354.0