2018 - Beatrice Zinker Upside Down Thinker Book 2 Incognito (Paperback) ISBN-13: 9781484768150 ISBN-10: 1484768159 Genre: Children's Books ? 2018 - Beatrice Zinker Upside Down Thinker (Paperback) → Hardcover ISBN-13: 9781484768143 ISBN-10: 1484768140 Genre: Children's Books ? 2017 - Beatrice Zinker Upside Down Thinker [Beatrice Zinker, Upside Down Thinker, Bk 1] (Hardcover) → Paperback ISBN-13: 9781484767382 ISBN-10: 1484767381 Genre: Children's Books 1 |