Pratchett, Terry Sourcery by Terry Pratchett. - New York : Signet, c1989. - 260 p. 17 cm. - Discworld . ISBN: 099455006996 LCCN: 97816557 Subjects--Topical Terms: Literature Index Terms--Genre/Form: Fantasy fiction. LC Class. No.: CPB Box no. 623 vol. 6 Dewey Class. No.: 823.914