The History of the Advent Calendar I Oxford Open LearningIn which period was the timetable created?
In which period did the agenda initially devised?
During what period did the timetable emerge?
In which period did the agenda originally created?
In which period did the calendar originally imagined?
In which period was the schedule initially devised?
In which period did the timetable generation?
At what time was the schedule emerge for the first time?