ballantine books simultaneous second mmpb printings/edition sharing merkin-printed covers
bears new astronomical (not to scale)
cover art by richard powers (signed powers)
cover price 35¢
156pp? including titles, indicia etc, end p.
check indicia publishing history to see if carcass of copy held was canadadian- or merkin- printed
no priority established nor liable to be, both state second printing: november, 1957