IX Pan American Railway Congress
Subtitle: Buenos Aires, 30th August-13th September 1957. Invitations, rules, lists of subjects, organizing committee, officers, relators
Published: 1957
Place of publication: Buenos Aires?
Language: eng
Number of pages: 65
Notes: "Prepared by the Organizing Committee of the IX Pan American Railway Congress in colaboration [sic] with the Permanent Commission of the Pan American Railway Congress Association."

Cover title.