Episode 44 of The Trigan Empire
aka The Zootha Vorgs
De Vorgplaneet (Dutch title)
The Vorg Planet (Dutch title, translated)
Planet Zootha was originally published in 5 installments in issues 630 (9 February 1974) to 634 (9 March 1974) of Look and Learn magazine.
To date it has not been reprinted in English.
630 631 632 633 634
Plot summary (Dutch)