Refraction and how to refract; including sections on optics, retinoscopy, the fitting of spectacles and eye-glasses, etc
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| OCLC: | 7823919 |
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| 主要作者: | |
| 语言: | English |
| 出版: |
Philadelphia,
P. Blakiston's son & co.,
1900.
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| 版: | 2d ed. |
| 主题: | |
| 格式: | Monograph Note that CRL will digitize material from the collection when copyright allows. |