I believe this book was purchased once, and there's no noticeable yellowing. However, it has been stored at home in a bookshelf with a door for a long time. Please check the condition in the photos, as there may be some age-related stains, discoloration, and yellowing. Please refrain from purchasing if you are overly concerned about the condition. "Trivia of Poisonous Plants" Yoshiyuki Ichinohe #YoshiyukiIchinohe #Books #Nature/Biology