Survey of hereditary blindness at the school for the blind at Worcester / [by] J. Op't Hof.
Material type:
TextSeries: South Africa. National Bureau of Educational and Social Research. Research series ; South Africa. National Bureau of Educational and Social Research. Research series ; no. 49.Publication details: Pretoria : National Bureau of Educational and Social Research, 1967.Subject(s): DDC classification: - 617/.7
- RE91 .O66
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At head of title: Department of Higher Education.
Bibliography: p. 38-40.
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