000 00232nam a2200097Ia 4500
100 _aSingh S.S.
250 _a5th
020 _a978-81-272-3215-7
245 _aPrinciples & practices of agronomy
260 _bKalyani Publishers, Ludhiana
_c2013
082 _a631SIN
999 _c278524
_d278524