000 00259nam a2200121Ia 4500
008 180721s9999 xx 000 0 und d
100 _aR.S. DIXIT
245 0 _aCROPPING SYSTEM RESEARCH
260 _bNil
260 _c2002
365 _b0.00
942 _cBK
999 _c165571
_d165571