00370nam a2200133 a 450000500170000000800410001704100080005808200120006610000230007824500600010126400290016130000320019065000140022220260717090720.0260717s1968    ii            000 0 eng d  aeng04a332.5441 aRobinson, E. A. G.10aStructure of competitive industry /cRobinson, E. A. G. 1bUniversity press,c1968.  axii, 156 p. : ill. ; 18 cm. 4aEconomics