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  1. 40203391200
    Author(s):Smulders, J. N. J.
    Title:[Practical results from periodical abstinence by Ogino-Smulders method]
    Subject(s):Birth control Technique: Safe period [ Knaus-Ogino ]
    Journal Title Abbreviation:Ned. tschr. geneesk.
    Date of Publication:1934
    Pagination:78: 3767–73.
    Language:Dutch
    Type of Resource:Analytic
    Series/Volume/Page:Series 4/Volume 2/Page 339
  2. 40203391110
    Author(s):Remmelts, R.
    Title:[Periodical sterility in women]
    Subject(s):Birth control Technique: Safe period [ Knaus-Ogino ]
    Journal Title Abbreviation:Geneesk. tschr. Ned. Indië
    Date of Publication:1932
    Pagination:72: 818
    Date of Publication:1934
    Pagination:74: 412.
    Reference Note:Also Ned. tschr. verlosk., 1931–32, 35: 233; 1934, 37: 63.
    Language:Dutch
    Type of Resource:Analytic
    Series/Volume/Page:Series 4/Volume 2/Page 339
  3. 40203391010
    Author(s):Nijhoff, G. C.
    Title:[Time of ovulation and conception as a basis of periodic abstention in marriage]
    Subject(s):Birth control Technique: Safe period [ Knaus-Ogino ]
    Journal Title Abbreviation:Ned. tschr. geneesk.
    Date of Publication:1931
    Pagination:75: pt 1, 578–86.
    Language:Dutch
    Type of Resource:Analytic
    Series/Volume/Page:Series 4/Volume 2/Page 339