I Wonder Why Planes Have Wings : And Other Questions About Transportation, Paperback by Maynard, Christopher, ISBN 0753467038, ISBN-13 9780753467039, Brand New, Free shipping in the US

With a fresh, new look for a best-selling series, I Wonder Why books are a useful resource to have at hand that answers kids' everyday questions in a child-friendly, accessible manner delivered in a way that encourages imaginative discussion. Simultaneous.