fighting, parasites, diseases, sure. but working round the clock is more common in industrialized societies than it was befor https://groups.csail.mit.edu/mac/u

fighting, parasites, diseases, sure. but working round the clock is more common in industrialized societies than it was befor https://groups.csail.mit.edu/mac/users/rauch/worktime/hours_workweek.html https://groups.csail.mit.edu/mac/users/rauch/worktime/hours_...