J J · J. Jespersen · James J.
Dover Publications · U.S. Government Printing Office
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) | 
|---|---|---|---|
| From sundials to atomic clocks: Understanding time and frequency | 978-0-16-050010-7 (0-16-050010-9) | 1999 | |
| From Sundials to Atomic Clocks: Understanding Time and Frequency, Second Revised Edition | 978-0-486-40913-9 (0-486-40913-9) | 2011 | Jane Fitz-Randolph |