"Temps Mesure." . . . . . . . . . . . . . . "The national measurement system for time and frequency : (study of the national measurement system; final report)" . . . . . . . . . "The National measurement system for time and frequency" . "The national measurement system for time and frequency" . . "The national measurement system for time and frequency"@en . . . . . . . . "Fréquences Mesure." . .