Numerical maps of fb Es for solar cycle minimun / c M. Leftin, S.M. Ostrow.
Contributors: Ostrow, S. M.; United States. Environmental Science Services Administration; Institute for Telecommunication Sciences.
Series: ESSA technical report -- ERL 124-ITS 87
Publisher: Institute for Telecommunication Sciences
Published: 1969
Place of publication: Boulder, Colo
Language: eng
Number of pages: 54
Subjects: Solar cycle -- Charts, diagrams, etc.; Troposphere -- Maximum usable frequency (Radio) -- Charts, diagrams, etc.; Tropospheric radio wave propagation -- Effect of solar cycle on.
Genres: Charts, diagrams, etc.
Notes: "August 1969."

Bibliography: p. 20-21.