Timekeeping at the US Naval Observatory
IEEE aerospace and electronic systems magazine ; 18 , 6 ; 9-14
2003
Aufsatz (Zeitschrift)
Englisch
Timekeeping at the US Naval Observatory
IEEE | 2003
|AIAA | 1971
|IuD Bahn | 1998
|Timekeeping and project control
Online Contents | 1996