| http://www.w3.org/ns/prov#value | - Colorful wall hangings can contain toxic substances November 12th, 2012 in Chemistry / Analytical Chemistry Traditional Swedish bonad paintings can contain toxic substances such as arsenic, reveals new research from the University of Gothenburg, Sweden, in which painting conservator and conservation scientist Ingalill Nystr??m analysed the paint and techniques used in the traditional painted wall
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