Episode 85 of The Trigan Empire
Alien Mission
aka De maan Gallas II (Dutch title)
The Moon Gallas II (Dutch title, translated)
Alien Mission was originally published in 12 installments in issues 1028 (21 November 1981) to 1039 (6 February 1982) of Look and Learn magazine.
Installments
1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039
Links
Plot summary (Dutch)