000 00293nam a22001217a 4500
008 181017b xxu||||| |||| 00| 0 eng d
041 _aeng
080 _a941
100 _a16
101 _aHIS
245 _aCrop Production Evolution Hisstory And Technology
_cSmith.C.W
942 _2udc
_cBK
999 _c50072
_d50072