# Dr. Gumpert’s book lists 192 citations of the sources of his material, referring to such authorities as the Statistisches Jahrbuch fur das Deutsche Reich. Wirtschaft und Statistik. Deutsches Arzteblatt, Deutsche medizinische Woohenschrift, and similar official and scientific German publications.
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https://paperspast.natlib.govt.nz/newspapers/LWM19400130.2.41.1
Bibliographic details
Lake Wakatip Mail, Issue 4452, 30 January 1940, Page 4 (Supplement)
Word Count
39Page 4 Advertisements Column 1 Lake Wakatip Mail, Issue 4452, 30 January 1940, Page 4 (Supplement)
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