000			00526nam a2200169Ia 4500
999			_c40360 _d40360
005			20211228091500.0
008			180712s9999 xx 000 0 und d
020			_a521098432
082			_a338.1 _bGRI _223
100			_aGRIGG, D.B.
245		4	_aThe Agricultural systems of the world: an evolutionary approach _c/ [by] D.B.Grigg
260			_aLondon _bCambridge University Press _c1974
300			_aix, 358 p.
500			_aIncludes appendix, bibliography and index.
650			_aAgriculture-Economic aspects
942			_cR