Share this Page Rien Poortvliet 0 Total Resources 1 Books Books by Rien Poortvliet 1 Sort by Number of Resources Number of Awards Book Title Year Published Word Count Reading Level: ATOS® Reading Level: Lexile® Add Multiple Titles to Reading List Browse books by Rien Poortvliet Gnomes by Wil Huygen and Rien Poortvliet 2 Resources Add to Reading List Share this Book Images courtesy of publishers, organizations, and sometimes their Twitter handles.