IQSY data of ionospheric absorption at Akita, from 1 January 1964 to 31 December 1965
著者
書誌事項
IQSY data of ionospheric absorption at Akita, from 1 January 1964 to 31 December 1965
National Committee for the International Years of the Quiet Sun, National Committee for the International Geophysical Coordination, Science Council of Japan, 1967