 It was first published in book form as a paperback by Ace Books in 1954 as an "Ace Double" issued back-to-back with Clifford D. Simak's novel "Ring Around the Sun".This version was editorially retitled Cosmic Manhunt and introduced a number of textual changes disapproved by the author.The novel was first issued by itself in another paperback edition under the title A Planet Called Krishna, published in England by Compact Books in 1966.