000			00343nam a2200145Ia 4500
008			210901s1986 xx 000 0 eng d
020			_a0395300568
082			_a338.52 RYA
100			_aRyan, W.J.L.
245		0	_aPrice theory
260			_aLondon _bMacmillan and Company Ltd. _c1962
300			_a396
650			_aEconomics
942			_2ddc _cBK
999			_c949 _d949