. . "Mouvements, Étude des." . . . . . "Time study and motion economy with procedures for methods improvement" . "Time study and motion economy with procedures for methods improvement"@en . . . . . . . . . . "Time study and motion economy, with procedures for methods improvement"@en . "Time study and motion economy" . . . . "Time study and motion economy : with procedures for methods improvement" . "Time study and motion economy; with procedures for methods improvement" . . "Time Study and Motion Economy. With procedures for methods improvement"@en . . . . . "Temps de travail, Étude des." . . "Estudio de tiempos." . .