The Cosmozoids

by Robert Tralins

Vintage Sci-Fi Series

From the back cover:

"THE INVASION OF EARTH

Secretly, silently, the formless shapeless horror of the Cosmozoids turned men into hulking zombies.

An alien power planned to infect all human intelligence and take over control of the world.

By accident, Jim Keith discovered what he could do to the Cosmozoids with high-frequency sound waves..."

The Cosmozoids (1966) by Robert Tralins - Tower Books