The books will be supplied and delivered to you within average 28 days
without any additional costs such as customs tax and shipping costs.
Why do we yawn? But no one knows why. Why did you yawn before your piano recital? Find out in The Yawn Book, a funny and fascinating book of facts, including the most unbelievable one: no one knows for sure why we yawn at all. One thing we do know for sure…this book will definitely make you yawn!