Ionospheric D-region electron densities and collision frequencies during the quiet sun period measured by means of radio wave interaction
By: by A.J. Ferraro and H.S. Lee
Contributors: Lee, H. S.; Pennsylvania State University. Ionosphere Research Laboratory
Series: Scientific report -- no. 308(D), 312(D), 322(D); Ionospheric research scientific report -- no. 308(D), 312(D), 322(D)
Publisher: Pennsylvania State University, College of Engineering, Dept. of Electrical Engineering, Ionosphere Research Laboratory
Published: 1967
Place of publication: University Park, Pa
Language: eng
Subjects: Ionospheric electron density; D region
Notes: At head of title: Ionospheric research.

"The research reported in this document was supported by National Science Foundation under grant GP-4622. The data were procured under an IQSY program supported under NSF grant GP-846."

"November 15, 1967"--Pt. 2; "August 15, 1968"--Pt. 3.

Includes bibliographical references.
Table of contents: title: Pt. 1, January 1, 1964 through June 30, 1964.; title: pt. 2, July 1, 1964 through December 31, 1964.; title: Pts. 3-4, January 1, 1965 through December 31, 1965.