000 00294nam a2200121Ia 4500
008 180721s9999 xx 000 0 und d
100 _a"Chattarjee, B.N. & et.al"
245 0 _aCropping system theory & practice
260 _bOxford & IBH
260 _c1989
365 _b49.00
942 _cBK
999 _c137888
_d137888