TY  - RPRT
TI  - Screening children for visual defects.
AU  - A V MacLellan
AU  - P Harker
PY  - 1977
DO  - 10.1136/bmj.2.6092.958-b
UR  - https://pubmed.ncbi.nlm.nih.gov/912389/
ID  - 912389
ER  -