Tight and square with flat spine - this looks unread. 2 grades of paper used, but since the better grade is in the middle (and the largest portion) - it still makes a good impression. Light wear to back cover.

"Clark Darlton" is a pseudonym of Walter Ernsting. The first book is one of 3 "Perry Rhodan" adventures that were "skipped over" when Ace was reprinting them. Menace of Atomigeddon takes place between Venus in Danger (#14) and Escape to Venus (#15.)