Ultimatum in 2050 A.D. by Jack Sharkey / Our Man in Space by Bruce W Ronald

Paperback. Condition: Very Good. 1965. ACE. 1st Printing.

Ultimatum in 2050 A.D. by Jack Sharkey
about a totalitarian society called "the Hive" where a constant population of 10 million people is maintained through a system of control and "Readjustment". The story follows Lloyd Bodger as he gets involved with a fugitive named Andra, who helps him uncover the truth that Readjustment is a euphemism for execution

Our Man in Space by Bruce W Ronald
It’s about an actor, Bill Brown, who is hired as a spy for Earth, because of his acting skill and his resemblance to an Earth diplomat, Harry Gordon, who has been killed. Brown’s job is to impersonate Gordon, and to travel to Troll, where Harry Gordon has been hired by the officials of Troll to find out when overpopulation pressures will cause Earth to explode…