000 00309nam a2200133Ia 4500
008 160316s9999 xxu||||| |||| 00| 0 eng d
020 _a
100 _aD B Grigg
245 _aAgricultural Systems Of The World
250 _a1
260 _aLONDON
_bCAMBRIDGE UNIVERSITY PRESS
_c
300 _a
700 _a
_a
999 _c24698
_d24698