Alexander, L. G. Practice and progress: an integrated course for pre-intermediate students / [by] L. G. Alexander; illustrations by Michael ffolkes, Graham and Gus. - London, Longmans, 1969. - xxii, 232 p. : illus. ; 25 cm. - New concept English . ISBN: 582523303 Subjects--Topical Terms: English language--Textbooks for foreign speakers LC Class. No.: PE1128.A2 Dewey Class. No.: 428