Tebbs, Trevor. Ways and means : a resource book of aids, methods, materials and systems for use with the language retarded child/ Coordinated by Tre vor Tebbs. - Somerset : Somerset Education Authority, 1978. - x, 190 p. : ill. ; 29 cm. Includes bibliographical references. ISBN: 0333237188 Subjects--Topical Terms: Special educationTeaching--Aids and devices. Dewey Class. No.: 371.90472