00346nam a2200157Ia 4500008004100000020000900041035000900050082001700059100001500076245003100091250000800122260003500130300000800165500000900173650000600182210723s9999||||xx |||||||||||||| ||und||  aNULL  a6631  a910.093BRAI  aRai, M. M. 0aPrinciples Of Soil Science  a1st  aN. DelhibMacmillan Press Ltd.  a220  a1409  a-