1999 - How Come Planet Earth (Paperback) ISBN-13: 9780761112396 ISBN-10: 0761112391 Genre: Children's Books 6 1998 - You Know You're Fifty When (Paperback) ISBN-13: 9780767902106 ISBN-10: 0767902106 Genres: Health, Fitness & Dieting, Parenting & Relationships, Humor & Entertainment 5 1993 - How Come Every Kid's Science Questions Explained (Paperback) → Paperback ISBN-13: 9781563053245 ISBN-10: 1563053241 Genres: Children's Books, Teen & Young Adult 14 |