Episode 40 of The Trigan Empire
A National Emergency
aka The Outlaw Planet (The Collection)
De planeet der ballingen (Dutch title)
The Planet of the Exiles (Dutch title, translated)
Written by Mike Butterworth
Illustrated by Don Lawrence
A National Emergency was originally published in 5 instalments in issues 606 (25 August 1973) to 610 (22 September 1973) of Look and Learn magazine.
It is reprinted in Volume 10 of The Trigan Empire—The Collection (the Don Lawrence Collection).
It is reprinted in Volume 4 of The Rise and Fall of the Trigan Empire (Rebellion).
Plot summary (Dutch)
MediaFire via British Comics Compilations