TY  - BOOK
AU  - Jespersen,James
AU  - Fitz-Randolph,Jane
AU  - Robb,John
TI  - From sundials to atomic clocks: understanding time and frequency 
SN  - 048624265X (pbk.)
AV  - QB209 .J47 1982
U1  - 602/.1 s529 19
PY  - 1982///
CY  - New York
PB  - Dover Publications
KW  - Time
KW  - Time measurements
KW  - Clocks and watches
N1  - Reprint. Originally published: Washington : National Bureau of Standards, U.S. Dept. of Commerce : for sale by the Supt. of Docs., U.S. G.P.O., 1977. (NBS monograph ; 155); Includes index; Bibliography: p. 170
ER  -