BOOK Robert A. Heinlein 'Citizen Of the Galaxy' (1957) PB science fiction

AUTHOR: Robert A. Heinlein
TITLE: Citizen of the Galaxy
PUBLISHER: Ace
YEAR: 1957 (likely a later reprint)
FORMAT: paperback
CONDITION: very good.  well preserved with clean bright pages and cover.

Shipping weight 8 ounces.