Clash of star-kings
By: by Avram Davidson
Contributors: Rackham, John
Series: Ace double novel books -- G-576
Publisher: Ace Books
Published: 1966
Place of publication: New York
Language: eng
Number of pages: 149
Subjects: American Science fiction
Notes: With (inverted): Danger from Vega/John Rackham. New York : Ace Books, [c1966].

Currey, L.W. Science fiction, p. [130]

R. Reginald.  Science fiction and fantasy literature : a checklist 1700-1974, p. 135.