Area handbook for Guyana. [Co-authors: William B. Mitchell and others. Prepared for the American University.

Published 1969

On a context for civil air transport / prepared by H. Bradley, assisted by R. B. Johnson, R. P. Milton and H. T. Spiro.

by Bradley, H.
Published 1967

Area handbook for Nicaragua. Co-authors: John Morris Ryan [and others] Prepared for the American University by Johnson Research Associates.

by Ryan, John Morris
Published 1970