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  1. 40508151830
    Author(s):Gertz, H.
    Title:Nouvelle forme de réduction des formules dioptriques.
    Subject(s):Eye refraction Examination: Methods
    Journal Title Abbreviation:Acta ophth.
    Place of Publication:Kbh.
    Date of Publication:1937
    Pagination:15: 179–92.
    Language:Danish
    Type of Resource:Analytic
    Series/Volume/Page:Series 4/Volume 5/Page 815
  2. 40508151850
    Author(s):Gjessing, H. G. A.
    Title:[Comparison of methods of refractometry (Snellen's tables, Thorner-Busch's refractometer, skiascopy, Holth's kinescopy)]
    Subject(s):Eye refraction Examination: Methods
    Journal Title Abbreviation:Norsk mag. laegevid.
    Date of Publication:1928
    Pagination:89: 1087–98.
    Reference Note:Also Acta ophth., Kbh., 1928, 6: 222–37.
    Language:Danish
    Type of Resource:Analytic
    Series/Volume/Page:Series 4/Volume 5/Page 815