Rycroft, M. J. (1976). Proceedings of open meetings of working groups on physical sciences of the eighteenth plenary meeting of COSPAR, Varna, Bulgaria, 29 May -7 June 1975 and COSPAR Symposium and Workshop on Results from Coordinated Upper Atmosphere Measurement Progra. Berlin: Akademie-Verlag.
Chicago Style CitationRycroft, Michael J. Proceedings of Open Meetings of Working Groups On Physical Sciences of the Eighteenth Plenary Meeting of COSPAR, Varna, Bulgaria, 29 May -7 June 1975 and COSPAR Symposium and Workshop On Results From Coordinated Upper Atmosphere Measurement Progra. Berlin: Akademie-Verlag, 1976.
MLA CitationRycroft, Michael J. Proceedings of Open Meetings of Working Groups On Physical Sciences of the Eighteenth Plenary Meeting of COSPAR, Varna, Bulgaria, 29 May -7 June 1975 and COSPAR Symposium and Workshop On Results From Coordinated Upper Atmosphere Measurement Progra. Berlin: Akademie-Verlag, 1976.