An award-winning science writer examines the ways humans have measured time throughout history and discusses the various units that are used to keep track of it. 40 color photos and color illustrations. Map included.
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An award-winning science writer examines the ways humans have measured time throughout history and discusses the various units that are used to keep track of it. 40 color photos and color illustrations. Map included.
Read Less
Add this copy of On Time to cart. $3.56, like new condition, Sold by ThriftBooks-Reno rated 5.0 out of 5 stars, ships from Reno, NV, UNITED STATES, published 2000 by National Geographic Society.
Add this copy of On Time to cart. $3.56, good condition, Sold by ThriftBooks-Reno rated 5.0 out of 5 stars, ships from Reno, NV, UNITED STATES, published 2000 by National Geographic Society.
Add this copy of On Time to cart. $5.16, like new condition, Sold by Wonder Book - Member ABAA/ILAB rated 5.0 out of 5 stars, ships from Frederick, MD, UNITED STATES, published 2000 by National Geographic Kids.
Add this copy of On Time to cart. $28.90, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2000 by National Geographic Children's.
Add this copy of On Time to cart. $60.38, new condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2000 by National Geographic Children's.
Add this copy of On Time to cart. $102.48, new condition, Sold by GridFreed rated 4.0 out of 5 stars, ships from North Las Vegas, NV, UNITED STATES, published 2000 by National Geographic Children's Books.
