H-alpha synoptic charts of solar activity for the period of Skylab observations May, 1973-March, 1974
By: by Patrick S. McIntosh
Contributors: World Data Center A for Solar-Terrestrial Physics; United States. National Oceanic and Atmospheric Administration
Series: Report UAG -- 40
Publisher: United States Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Data Service
Published: 1975
Place of publication: Asheville, N.C
Language: eng
Number of pages: 32
Subjects: Solar activity; Charts, diagrams
Notes: "February 1975."

At head of title: World Data Center A for Solar-Terrestrial Physics.

Includes bibliographical references.