000 00292nam a2200121Ia 4500
008 210922s9999 xx 000 0 und d
100 _aPALANIAPPAN
245 0 _aCropping systems in the tropic principles and management
260 _c2014
365 _b95
650 _aAGRON
942 _cBK
999 _c231160
_d231160