Harris, Michael, 1955- World class / Michael Harris, David Mower. Students' book. - \Harlow : Longman, 1991. - \118p. : ill(some col.) ; 27cm. ISBN: \0582053196 (pbk) : Subjects--Topical Terms: Philology and Linguistic LC Class. No.: PE1128 Dewey Class. No.: 428.24