Doff, Adrian. Language in use : A per- intermediate Course / Self-Study Workbook A. Adrian Doff, Christopher Jones. - Cambridge, UK : Cambridge University Press, 1992. - 139 p. : ill. ; 28 cm. Elementary. ISBN: 9780521408370 Subjects--Topical Terms: English language--Textbooks. Dewey Class. No.: 428.24 / DAL