G. Bekefi, Sanborn C. Brown.
Reprinted from American journal of physics, v. 29, no. 7, 404-428, July, 1961. "February 14, 1961"--Cover.
Includes bibliographical references.
Army Signal Corps Contract DA36-039-sc-78108. Dept. of the Army Task 3-99-20-001 and Project 3-99-00-000.