This is Marvel Science Stories for February 1951, cover by Norman Saunders. The ISFDB entry for this issue is here. I found this version of the cover at Pulp Covers, where the curators have also made the entire issue available for download as well as some fine interior art, in this case all by Vincent Napoli. For example, this illustration for Bryce Walton’s story “The Man.”

This example of the tube-girl meme for another Bryce Walton story, “The Difference.”

And this warrior-girl illustration to the title story, Alfred Coppel’s “Forbidden Weapon.”