000 00403nam a2200145Ia 4500
999 _c1023
_d1023
003 OSt
005 20201001143014.0
008 160331s1990 xx 000 0 und d
080 _a631.1 N0
100 _aMukhopadhyay, A.
245 _aCrops, cost and variation : investigation based on farm management studies
260 _bMittal Publications, New Delhi
_c1990
300 _a415+XXXII
942 _2udc
_cBK