Episode 69 of The Trigan Empire
Battle for Survival
aka Duel met Cato (Dutch title)
Duel with Cato (Dutch title, translated)
Written by author(s) unknown
Illustrated by Oliver Frey
Battle for Survival was originally published in 8 installments in issues 826 (12 November 1977) to 833 (31 December 1977) of Look and Learn magazine.
To date it has not been reprinted in English.

Installments
826 827 828 829 830 831 832 833
Plot summary (Dutch)
Downloads
MediaFire via British Comics Compilations