A set of 4 chapter books from the children's science-themed picture book series "The Magic School Bus." These are English children's books. - Series: The Magic School Bus - Title: Expedition Down Under - Title: Amazing Magnetism - Title: Electric Storm - Title: Butterfly Battle I purchased these in the US previously. They have been stored at home for a long time. There is yellowing and staining (especially on the inside of the covers). These are used items, so please understand. Thank you for looking.