000 00328nam a2200121Ia 4500
008 161118s2016 xx 000 0 und d
082 _a630 SHA-R
100 _aShanor, W. W. & Others
245 0 _aReadings in Farming Systems Research & Development
260 _aBoulder
_bWestview Press
_c1982
300 _a175p.
942 _2ddc
999 _c17039
_d17039