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Johann SchröderJohann Schröder (1600-1664) was a German physician and pharmacologist who was the first person to recognise that arsenic was an element. In 1649, he produced the elemental form of arsenic by heating its oxide, and published two methods for its preparation. |
| This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Johann_Schröder". A list of authors is available in Wikipedia. |
