The ballad of Beta-2
By: by Samuel R. Delany
Series: Ace double -- M-121
Publisher: Ace Books
Published: 1965
Place of publication: New York
Language: eng
Number of pages: 124
Subjects: American Science fiction
Notes: With this is bound (inverted) as issued: Petaja, E. Alpha yes, terra no! New York, 1965.

Currey, L.W. Science fiction, p. [139]

Also issued online.