Suchman, R G Visual testing of preverbal and nonverbal young children. [electronic resource] - American journal of optometry and archives of American Academy of Optometry Oct 1968 - 642-57 p. digital Publication Type: Journal Article ISSN: 0002-9408 Standard No.: 10.1097/00006324-196810000-00002 doi Subjects--Topical Terms: ChildChild, PreschoolHumansLearningSpeech Disorders--diagnosisVerbal BehaviorVision Disorders--diagnosisVision Tests