File:Double Phoenix.jpg

Summary
Cover from Double Phoenix, by Edmund Cooper and Roger Lancelyn Green, Ballantine Books, 1971.

Rationale
Fair use claimed for Double Phoenix:
 * illustrates the subject of the article.
 * no free alternative.
 * the size and resolution make reproduction for bootleg copies difficult.
 * reproduction does not detract from the commercial value.
 * source: http://www.isfdb.org/cgi-bin/pl.cgi?10734