Eco, Umberto. Foucault's pendulum / Umberto Eco ; translated from the Italian by William Weaver. - 1st trade ed. - San Diego : Harcourt Brace Jovanovich, c1989. - 641 p. : ill. ; 24 cm. Translation of: Il pendolo di Foucault. "A Helen and Kurt Wolff book." ISBN: 0151327653 LC Class. No.: PQ4865.C6 / P4613 1989 Dewey Class. No.: 853/.914