• We discovered three poisonous books in our university library https://theconversation.com/how-we-discovered-three-poisonous-books-in-our-university-library-98358 65 comments 1/7/2018

• How we discovered three poisonous books in our university library https://ponderwall.com/index.php/2019/05/11/poisonous-books-university-library/ 21 comments 23/5/2019 books
• How we discovered three poisonous books in our university library. https://theconversation.com/how-we-discovered-three-poisonous-books-in-our-university-library-98358 401 comments 9/7/2018 books