TY  - RPRT
TI  - A study in visual defects in young children.
AU  - P A TYSER
AU  - T W LETCHWORTH
PY  - 1949
DO  - 10.1136/bmj.2.4635.1022
UR  - https://pubmed.ncbi.nlm.nih.gov/15393040/
ID  - 15393040
ER  -