000			00269nam a2200097 4500
999			_c336638 _d336638
082			_a338.2 _bWEL.E
100			_aWellmer, Friedrich-Wilhelm.
245			_aEconomic Evaluations in Exploration _cWellmer, Friedrich-Wilhelm.
260			_aBerlin _c1986 _bSpringer
942			_cBK