I Wonder Why Zips Have Teeth and Other Questions About Inventions (I wonder why series)

by Barbara Taylor (Author)

• Used

  Hardcover
  1996

  $36.13

• Used

  Paperback
  2003

  $3.46

  This introduction to the world of inventions answers questions including: which computer was as big as a bus?, why are bears called teddies? and what did people use before fridges?