000 00266nam a2200121Ia 4500
008 161121s9999 xx 000 0 und d
100 _aPALANIAPPAN.SP
245 0 _aCropping systems in the tropics
260 _cWiley
365 _b0
650 _aNIL
942 _cBK
999 _c92669
_d92669