From sundials to atomic clocks : understanding time and frequency /Author: Jespersen, James.
Publisher: Mineola, NY : Dover Publications,
Date: 1999. This title can be found in 1 Iowa libraries.
From sundials to atomic clocks : understanding time and frequency /Author: Jespersen, James.
Publisher: Washington, D.C. : U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology,
Date: 1999. This title can be found in 1 Iowa libraries.
From sundials to atomic clocks : understanding time and frequency /Author: Jespersen, James.
Publisher: [Gaithersburg, Md.] : U.S. Department of Commerce, Technology Administration, National Institute of Standards and Technology,
Date: 1999. This title can be found in 1 Iowa libraries.
Mummies, dinosaurs, moon rocks : how we know how old things are /Author: Jespersen, James.
Publisher: New York, N.Y. : Atheneum Books for Young Readers,
Date: c1996. This title can be found in 2 Iowa libraries.
From quarks to quasars : a tour of the universe /Author: Jespersen, James.
Publisher: New York : Atheneum,
Date: 1987. This title can be found in 3 Iowa libraries.
Rams, roms & robots : the inside story of computers /Author: Jespersen, James.
Publisher: New York : Atheneum,
Date: 1984. This title can be found in 2 Iowa libraries.
From sundials to atomic clocks : understanding time and frequency /Author: Jespersen, James.
Publisher: New York : Dover Publications,
Date: 1982. This title can be found in 3 Iowa libraries.
Mercury's web : the story of telecommunications /Author: Jespersen, James.
Publisher: New York : Atheneum,
Date: 1981. This title can be found in 5 Iowa libraries.
How to write for children and young adults : a handbook /Author: Fitz-Randolph, Jane.
Publisher: New York : Barnes & Noble,
Date: 1980. This title can be found in 1 Iowa libraries.
From sundials to atomic clocks : understanding time and frequency /Author: Jespersen, James.
Publisher: [Washington] : For sale by the Supt. of Docs. U.S. Govt. Print. Off., For sale by the Supt. of Docs. U.S. Govt. Print. Off.,
Date: 1977 [published 1978] This title can be found in 1 Iowa libraries.
From sundials to atomic clocks : understanding time and frequency /Author: Jespersen, James.
Publisher: [Washington : National Bureau of Standards, U.S. Dept. of Commerce] : for sale by the Supt. of Docs., U.S. Govt. Print. Off.,
Date: 1977. This title can be found in 3 Iowa libraries.
Writing for the juvenile and teenage market.Author: Fitz-Randolph, Jane.
Publisher: New York, Funk & Wagnalls
Date: [1969] This title can be found in 3 Iowa libraries.
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