| LC control no. | sh 92006732 |
|---|---|
| LC classification | RE977.B5 |
| Topical heading | Bifocal lenses |
| Variant(s) | Bifocals Lenses, Bifocal |
| See also | Ophthalmic lenses Progressive lenses (Ophthalmology) |
| Found in | Work cat.: Bifocal lens prescription analysis chart, 1937. Stein, H.A. Ophthalmic terminology, 1992. |
| Not found in | MESH |
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