2012 - Who Cut the Cheese [Doctor Proctor's Fart Powder, Bk 3] (Paperback) → Hardcover ISBN-13: 9781442433083 ISBN-10: 1442433086 Genres: Children's Books, Teen & Young Adult 3 2011 - Bubble in the Bathtub [Doctor Proctor's Fart Powder, Bk 2] (Paperback) ISBN-13: 9781416979753 ISBN-10: 1416979751 Genre: Children's Books 1 |