000 00270nam a2200109Ia 4500
008 221219s9999 xx 000 0 und d
100 _aS. S. Singh
245 0 _aPrinciples and Practices of Agronomy
260 _bKalyani Publishers
650 _aAgronomy
942 _cBK
_011
999 _c2967
_d2967