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Handbuch der Balneotherapie : Practischer Leitfaden bei Verordnung der Mineralquellen, Molken, Seebäder, klimatischen Kurorte etc. Mit 1 Heilquellen Karte. / H Helfft. Public Domain Mark. Source: Wellcome Collection.
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This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.