-
1
From sundials to atomic clocks understanding time and frequency
[Gaithersburg, Md.?] : Washington, DC : U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology ; For sale by the Supt. of Docs., U.S. G.P.O., 1999
1999 ed.Format: Government Document Book
-
2
From sundials to atomic clocks : understanding time and frequency
[Gaithersburg, Md.?] : Washington, DC : U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology ; For sale by the Supt. of Docs., U.S. G.P.O., 1999
1999 ed.Format: Government Document Book
-
3
From sundials to atomic clocks : understanding time and frequency
[Washington] :; Washington, DC : Dept. of Commerce, National Bureau of Standards : for sale by the Supt. of Docs. U.S. Govt. Print. Off,; National Bureau of Standards, 1977Format: Government Document Book
-
4
-
5
How to write for children and young adults : a handbook
New York : Barnes & Noble, 1980Format: Book
-
6
From sundials to atomic clocks : understanding time and frequency
[Washington] : [National Bureau of Standards, U.S. Dept. of Commerce] : For sale by the Supt. of Docs., U.S. Govt. Print. Off., 1977Format: Government Document Book
-
7
From sundials to atomic clocks : understanding time and frequency
New York : Dover Publications, 1982Format: Book
-
8
From sundials to atomic clocks : understanding time and frequency
Mineola, NY : Dover Publications, 1999
2nd rev. ed.Format: Book
-
9
From sundials to atomic clocks : understanding time and frequency
[Washington] : Dept. of Commerce, National Bureau of Standards : for sale by the Supt. of Docs. U.S. Govt. Print. Off., 1977Format: Government Document Book
-
10
-
11
Mummies, dinosaurs, moon rocks : how we know how old things are
New York, N.Y. : Atheneum Books for Young Readers, 1996Format: Book
-
12
-
13
How to write for children and young adults : a handbook
New York : Barnes & Noble, 1980
1st Barnes & Noble Books ed.Format: Book
-
14
-
15
Time & clocks for the space age
[Place of publication not identified] : Atheneum, 1979
1st ed.Format: Book