HEOS-A, Press kit
1968-11-27
Miscellaneous
No indication
English
Heos 1 - Early Orbit Assessment
NTIS | 1969
|NTIS | 1968
Tema Archive | 1971
|ESRO/Eldo Bulletin, Supplement - Heos-1
NTIS | 1969
Heos- A2 Satellite Functional Description
NTIS | 1970
|