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

Bibliografiset tiedot
Päätekijä:	Sloan, Louise Littig 1898-
Aineistotyyppi:	Kirja
Kieli:	English
Julkaistu:	Baltimore Williams & Wilkins c1977.
Aiheet:	Ophthalmic lenses. Reading devices for people with disabilities. People with visual disabilities.