Hardcover
details (USA).(see also: Audible Audiobook)
details (UK).(see also: Audible Audiobook)
details (Germany).(see also: Audible Hörbuch)
details (Canada).(see also: Audible Audiobook)
ISBN: 978-1-58089-137-0
ISBN-10: 1-58089-137-3
National Geographic School Pub · 2010