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Cover art:
Blurb: “Space Legionnaires
They were the greatest trio of swashbuckling adventurers ever to ship out to the stars! There was giant Hal Samdu, rocklike Jay Kalam and the incomparable shrewd and knavish Giles Habibula.
Here is there first thrilling adventure — the peril-packed attempt to rescue the most important person in the galaxy, keeper of the vital secret essential to humanity's survival in the deadly struggle against the incredibly evil Medusae...”