00821cam a2200193 a 450000500170000000800410001703500150005805000220007324501990009526000490029430000300034349000250037365000400039865000470043870000270048570000270051270000280053981000600056720260817161746.0050705s1974    us      r     000|0 eng d  a.b10057614 4aQE75bB9 no. 2039 0aAdvances related to United States and international mineral resources : developing frameworks and exploration technologies /bedited by Richard W. Scott, Jr., Pamela S. Detra and Byron R. Berger  aWashington :bU. S. Govt. Print. Off.,c1993  a277 p. +e(map in pocket)1 aBulletin ;vno. 2039 0aProspectingxEquipment and supplies 0aMines and mineral resourceszUnited States1 aDetra, Pamela S.,eed.1 aBerger, Byron R.,eed.1 aScott, Richard W.,eed.1 aUnited States. Geological Survey.bBulletin ;vno. 2039