00721nam a2200217 4500 1/12866 980521s1974 enkd i 001 eng 0256015082 13313 DLC GR-PeUP 338.5 PE Peterson, Willis L. Principles of economics : micro / Willis L. Peterson. Illinois: Richard D.Irwin, 1974. 376 p.: tabl.; 24 cm. Index. Economic theory. Microeconomics. INST UNIPILB MAIN 20040709 338.5 PE 00107275 00107275 LOAN 0 1 INST UNIPILB MAIN 20161017 338.5 PE 00176286 00176286 LOAN 0 2 /webopac/covers/01/13313_0256015082.jpg