I Wonder Why Zippers Have Teeth

¸±±êÌâ: And Other Questions About Inventions (I Wonder Why)

ISBN: 9780753456651

³ö°æÉç: Kingfisher

³ö°æÄê: 2003-08-22

Ò³Êý: 32

¶¨¼Û: USD 6.95

×°Ö¡: Paperback

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"What did people use before they had refrigerators?" and "Where do inventors get their ideas?" are some of the questions answered in this intriguing look at inventions.