Refraction and how to refract; including sections on optics, retinoscopy, the fitting of spectacles and eye-glasses, etc
Wedi'i Gadw mewn:
| OCLC: | 7823919 |
|---|---|
| Prif Awdur: | |
| Iaith: | English |
| Cyhoeddwyd: |
Philadelphia,
P. Blakiston's son & co.,
1900.
|
| Rhifyn: | 2d ed. |
| Pynciau: | |
| Fformat: | Monograph Note that CRL will digitize material from the collection when copyright allows. |