000 00252nam a2200097Ia 4500
008 180322s9999 xx 000 0 und d
082 _a631SIN
100 _aSingh S.S.
245 0 _aPrinciples and Practices of Agronomy
260 _b"Kalayani Publishers, New Delhi"
260 _c1996
999 _c358614
_d358614