Thomas A. Seliga
William Swider
William L. Grose
Symposium on Methods of Measurements and Results of Lower Ionosphere Structure (1973 Konstantz, Germany)
K. Rawer
COSPAR. Scientific Commission C. C4.1 Symposium
R. E. LeLevier
Donald Howard Menzel
Unknown Author
L. W. Hewitt
Hari K. Sen
B. W. Reinisch
Luiz Gylvan Meira
Mizun, I͡U. G.
D. K. Chakrabarty
J. N. Rowe
James R. Wait