000			00342nam a2200157Ia 4500
008			200202s9999 xx 000 0 und d
082			_a300 Isa
100			_a"Isard, Walter."
245		0	_aGeneral theory
260			_aCambridge
260			_bM.I.T. Press
260			_c1969
300			_a1040p
650			_aSocial Sciences
942			_cB
999			_c3424 _d3424