00325nam a2200121Ia 4500008004100000082002000041100002200061245002200083260005100105300001000156600002000166650001700186140224s9999    xx            000 0 und d  a631.4=494.81 L2  aVarghese, Thomas.  aMrittika vijnanam  aTrivandrumbState institute of Languagesc1972  a181p.  aThomas Varghese  aSoil science