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

Xehetasun bibliografikoak
Egile nagusia:	Sloan, Louise Littig 1898-
Formatua:	Liburua
Hizkuntza:	English
Argitaratua:	Baltimore Williams & Wilkins c1977.
Gaiak:	Ophthalmic lenses. Reading devices for people with disabilities. People with visual disabilities.