00716nam a22002051 4500 1/13039 980609s1970 enk 001 0eng d 13488 DLC GR-PeUP 338.9 FO Fogel, Robert William. Railroads and american economic growth: essays in econometrics history/ by Robert William Fogel. Baltimore: The Johns Hopkins Press, 1970. 296p.: tabl.; 20cm. Index. Bibliography. Economic growth. Railroads. INST UNIPILB MAIN 20040709 338.9 FO 00105046 00105046 LOAN 0 1 INST UNIPILB MAIN 20040709 338.9 FO 00129178 00129178 LOAN 0 2