Farmer, Philip José. The unreasoning mask / [electronic resource] / Philip José Farmer.. — New York : : Berkley Books,, 1983, c1981.. — 260 p. ; 18 cm. - Berkley science fiction.
Cover illustration by Val Lakey.
0425055515 (pbk.) : $2.75 9780425055519 (pbk.)
Science fiction.
PS3556.A76 / U67 1983