TY - BOOK AU - Reid,Barbara AU - Kiernan,Chris AU - Jones,Linda Gale TI - Signs and symbols: a review of literature and survey of the use of non-vocal communication systems T2 - Studies in education : new series (Heinemann Educational Books, London) , SN - 0-85473-129-6 U1 - 409 20A PY - 1982/// CY - London PB - Heinemann Educational Books N1 - Notes bibliogr ER -