TY  - GEN
AU  - ROLF,D E
TI  - A reversible bifocal lens
SN  - 0096-6339
PY  - 2004///0215
KW  - Eyeglasses
KW  - Humans
KW  - Lenses
N1  - Publication Type: Journal Article
UR  - https://doi.org/10.1001/archopht.1951.01700010478013
ER  -