The United States and the United Nations / Edited by Francis O. Wilcox and H. Field Haviland, Jr

Transporte e objetivos nacionais / Edwin T. Haefele … [et al.] ; traduçao de Noel Gertel

Transport and the economic integration of South America / [by] Robert T. Brown

Cuba and the United States : long range perspectives / Essays by Henry Wriston [and others] John Plank, editor