Research Institute lectures on geography. /
Coordinated and directed by Roger A. Leestma.

APA Citation

Leestma, R. A. (Roger Arnold)., United States. Army Engineer Topographic Laboratories. Research Institute. (1971). Research Institute lectures on geography.. Fort Belvoir, Va.: U.S. Army Engineer Topographic Laboratories.

MLA Citation

Leestma, Roger A. (Roger Arnold), 1910-, and United States. Army Engineer Topographic Laboratories. Research Institute. Research Institute Lectures On Geography.. Fort Belvoir, Va.: U.S. Army Engineer Topographic Laboratories, 1971.