00437nam a2200157Ia 4500008004100000082001700041100001600058245002600074260004600100300000700146650004100153650003400194653002300228653001000251700001800261170901s1972    xx            000 0 und d  a631.42bA45P  aSingh, Amar 0aPrayogic Mrida Vigyan  aLucknowbU. P. Hindi Grandh Academyc1972  a97  aAgriculture and related technologies  aTechnology (Applied sciences)  aLaboratory methods  aSoils  aGhosh, Deepak