Comprehensive tables of sudden ionospheric disturbances observed at the Radio Research Laboratories during the International Active Sun Years, January 1969-December 1971.
Contributors: Yūseishō Denpa Kenkyūjo (Japan)
Publisher: Radio Research Laboratories, Ministry of Posts and Telecommunications
Published: 1972
Place of publication: Tokyo
Language: eng
Number of pages: 87
Subjects: Sudden ionospheric disturbances -- Tables.
Notes: On spine: Comprehensive tables of SID's observed at RRL during IASY Jan. 1969 Dec. 1971.