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  1. 40507751450
    Author(s):Emsley, H. H.
    Swaine, W.
    Title:Ophthalmic lenses.
    Subject(s):Eyeglass [ and spectacle ] Lens
    Pagination:319p.
    Place of Publication:Lond.
    Date of Publication:1928
    Size:8°.
    Language:English
    Type of Resource:Monograph
    Series/Volume/Page:Series 4/Volume 5/Page 775
  2. 40507751460
    Author(s):Obrig, T. E.
    Title:Modern ophthalmic lenses and optical glass.
    Subject(s):Eyeglass [ and spectacle ] Lens
    Pagination:323p.
    Place of Publication:N. Y.
    Date of Publication:1935
    Size:8°.
    Language:English
    Type of Resource:Monograph
    Series/Volume/Page:Series 4/Volume 5/Page 775