000 00320nam a2200133Ia 4500
008 180721s9999 xx 000 0 und d
082 _aJ Q3
100 _a"Singh, S.S."
245 0 _aPrinciples and Practices of Agronomy
260 _b"Kalyan Publishers, Ludhiana"
260 _c2013
365 _b225
942 _cBK
999 _c132950
_d132950