00740nam a2200205 4500 1/5209 941205s1957 enka 000 eng d 0070353352 5491 DLC GR-PeUP 330 KO Koopmans, Tjalling C. Three essays on the state of economic science / Tjalling C. Koopmans. New York: McGraw-Hill, 1957 231p.: illus.; 24cm. Economics. The state of economic science. INST UNIPILB MAIN 20040709 330 KO 00100621 00100621 LOAN 0 3 INST UNIPILB MAIN 20040709 330 KO 00100640 00100640 LOAN 0 1 INST UNIPILB MAIN 20040709 330 KO 00101353 00101353 LOAN 0 2