Reading aids for the partially sighted a systematic classification and procedure for prescribing

Dades bibliogràfiques
Autor principal:	Sloan, Louise Littig 1898-
Format:	Llibre
Idioma:	English
Publicat:	Baltimore Williams & Wilkins c1977.
Matèries:	Ophthalmic lenses. Reading devices for people with disabilities. People with visual disabilities.