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"Invader on my Back" is an original novel. It was later issued in the U.K. as a hardcover by Robert Hale (1968) and the British SFBC (1969). "Destination: Saturn" is a reprint of an Avalon hardcover (1967). "David Grinnell" is a pseudonym of then-Ace Books editor Donald A. Wollheim.
"synopsis" may belong to another edition of this title.
Book Description Ace Books, 1968. Mass Market Paperback. Condition: New. Never used!. Seller Inventory # P110709103077
Book Description Ace Books, 1968. Condition: New. Jack Gaughan; Kelly Freas (illustrator). book. Seller Inventory # M0709103077