00339nam a2200121 a 450000500170000008200180001710000180003510000210005324500470007426000440012130000270016563000250019220251202164140.0  a338.0954bHAY  aHay, Donald A  aMorris, Derek  J  aIndustrial economics:btheory and evidence  aNew YorkbOxford University Pressc1984  axii, 649p.b22 cm.cPB  aIndustrial economics