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Experiments and observations, to investigate, by chemical analysis, the medicinal properties of the mineral waters of Spa and Aix-la-Chapelle, in Germany : and of the waters and boue near St. Amand, in French Flanders / By John Ash. Public Domain Mark. Source: Wellcome Collection.
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This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.