Adrian, Doff Language in use : beginner: self study workbook with answer key / Doff Adrian and Christopher Jones - New York : Cambridge University Press, c2001. - 9 p. : ill. ; 25 cm. ISBN: LCCN: Subjects--Topical Terms: English language LC Class. No.: PE1111 / . 2001 Dewey Class. No.: 401.9 / A243l