In which period was the agenda originated?
During what period was the timetable first devised?
In what period was the timetable emerge?
During what period was the schedule firstly invented?
In which period did the timetable firstly thought up?
At what time did the agenda firstly created?
During what period did the schedule creation?
In which period was the agenda arise for the first time?
Who invented the first calendar WiseAnswers
