[DEVICES FOR DETERMINING VISUAL ACUITY IN SMALL CHILDREN].
D002648:Child; D003604:Czechoslovakia; D004864:Equipment and Supplies; D006801:Humans; D009885:Ophthalmology; D014787:Vision Tests; D014792:Visual Acuity
CHILD; CZECHOSLOVAKIA; EQUIPMENT AND SUPPLIES; OPHTHALMOLOGY; VISION TESTS
POMUCKY PRO ZJI S TOV'AN'I V'IZU MAL'YCH D ET'I.