000 00421nam a22001337a 4500
999 _c6882
_d6882
005 20191220143909.0
008 171109b xxu||||| |||| 00| 0 eng d
082 _222
_a630 TRI
245 _aPlanned change in farming systems: Progress in on-farm research/ (Acc: D 1334)
_cby Robert Tripp
260 _aNew York:
_bJohn Wiley & Sons.
_c1991
300 _ax, 348 p
_bill.,
_c15 cm.
700 _aTripp, Robert
942 _2ddc
_cAG