TY  - RPRT
TI  - The development and study of visual acuity.
AU  - J van Hof-van Duin
PY  - 1989
DO  - 10.1111/j.1469-8749.1989.tb04035.x
UR  - https://pubmed.ncbi.nlm.nih.gov/2680692/
ID  - 2680692
ER  -