[What is a time machine worth?].
Frucht
U
U
D003363:Cost Control / Q000639:trends; D004209:Disposable Equipment / Q000639:trends*; D005544:Forecasting; D005860:Germany, West; D006801:Humans; D013677:Medical Laboratory Science / Q000639:trends*
Wieviel ist eine Zeitmaschine wert?