Kerry, Trevor Mixed Ability Teaching in the early years of the Secondary School : a teaching skills workbook / Trevor Kerry, Margaret Sands. - London : Macmillan Education ltd, c 1982. - 46 p. : ill. ; 30 cm. - DES Teacher education project focus books. . ISBN: 0333316576 Subjects--Topical Terms: Teaching,Education, Dewey Class. No.: 371.3 / KER