How three poisonous books were discovered in a university library

Research led to the discovery that three historic books were covered in a layer of arsenic source: https://ift.tt/2tZDWvf #Headlines by: Jakob Povl Holck, Kaare Lund Rasmussen Original Post: https://ift.tt/2KSwusn https://ift.tt/2KyPeAR
source: https://droolindognews.blogspot.com/2018/07/how-three-poisonous-books-were.html