TY  - RPRT
TI  - A hard plastic spectacle lens.
AU  - M W NUGENT
AU  - R GRAHAM
PY  - 1950
DO  - 10.1016/0002-9394(50)90600-3
UR  - https://pubmed.ncbi.nlm.nih.gov/14789922/
ID  - 14789922
ER  -