00255nam a2200109Ia 4500082002000000100002000020245003200040260004800072300001500120500000500135700000500140  a330.1bSh524.SE  aShackle, G.L.S.  aScheme of economic theoryb  aCambridgebCambridge University Pressc1965  axii, 209p.  a  a