Sinclair, Barbara. Activate your English : pre-intermediate self-study workbook / Barbara Sinclair, Gregory Hoehner - Cambridge : Cambridge University Press, 1996. - 50 p. : ill., 1 map ; 30 cm. ISBN: 0521425697 LCCN: 97156135 Subjects--Topical Terms: English language--Textbooks for foreign speakers. LC Class. No.: PE1128 / .S56 1996 Dewey Class. No.: 425 / SIA 1996