Skurzynski, Gloria.
On time : from seasons to split seconds / by Gloria Skurzynski. - Washington, D.C. : National Geographic Society, 2000. - 41 p. : col. ill., col. maps ; 29 cm.
Includes index.
Examines the ways humans have measured time throughout history and discusses the various units that are used to keep track of it.
0792275039
99033927
Time measurements--History--Juvenile literature.
Time measurements.
QB209.5 / S53 2000
On time : from seasons to split seconds / by Gloria Skurzynski. - Washington, D.C. : National Geographic Society, 2000. - 41 p. : col. ill., col. maps ; 29 cm.
Includes index.
Examines the ways humans have measured time throughout history and discusses the various units that are used to keep track of it.
0792275039
99033927
Time measurements--History--Juvenile literature.
Time measurements.
QB209.5 / S53 2000
Hong Kong Nang Yan College of Higher Education
Lee Yan Fong Library
325-329 Lai Chi Kok Road, Shamshuipo, Kowloon, HONG KONG
Lee Yan Fong Library
325-329 Lai Chi Kok Road, Shamshuipo, Kowloon, HONG KONG