George, Alexander L. Practice and progress: an integrated course for pre-intermediate students / [by] L. G. Alexander; illustrations by Michael ffolkes, Graham and Gus. - xxii, 232 pages : illustration ; 25 cm - New concept English . LCCN: 72437375 Nat. Bib. No.: B67-16280 Subjects--Topical Terms: English language--Textbooks for foreign speakers LC Class. No.: PE1128.A2 / A35 1967