Be especially cautious around emerald green books. There's a possibility they contain arsenic http://wiki.winterthur.org/wiki/Poison_Book_Project http://wiki.w

Be especially cautious around emerald green books. There's a possibility they contain arsenic http://wiki.winterthur.org/wiki/Poison_Book_Project http://wiki.winterthur.org/wiki/Poison_Book_Project https://www.nationalgeographic.com/premium/article/these-green-books-are-literally-poisonous https://www.nationalgeographic.com/premium/article/these-gre...