J.A. Bittencourt | M. A. Abdu | V. B. Wickwar
Ionospheric and Thermospheric Studies
Proceedings of the Topical Meetings of the Cospar Interdisciplinary Scientificcommission P (Meeting P2) & C (Meetings C4 & C8) of the Cospartwenty-Eighth Plenary Meeting Held in the Hague, the Netherlands, June/July 1990