000 00288nam a2200109Ia 4500
008 220204s9999 xx 000 0 und d
082 _a631/635
_bSIN
100 _aSingh, S S
245 0 _aPrinciples and practices of agronomy
260 _aNew Delhi
_bKalyani Publishers
_c1988
942 _cBK
999 _c41830
_d41830