000			00518nam a2200193Ia 4500
008			140317s9999 xx 000 0 und d
082			_a631
100			_aShaner,W.M.
245			_aFarming systems research and development:guidelines for developing countries.
260			_aBoulder _bWestview Press _c1982
300			_a414
650			_aAgriculture
653			_aAgriculture
653			_aCrop Production
653			_aFarming Systems
700			_aPhilipp,P.F.
700			_aSchnehl,W.R.
942			_2ddc _cBK
999			_c10171 _d10171