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200 1 $a<<El >>Escorial$bRisorsa grafica$fAnderson, Rom
210   $aBraunschweig ; Berlin ; Hamburg ; München ; Kiel ; Darmstadt$cWestermann$ds. d.
215   $a1 fotografia$d135 x 93 mm
225 1 $aWestermann Dia und Foto$v1115$iLänderkunde$v9
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610 0 $aSpagna$aEscorial$aImmagini
700  1$aAnderson,$bDomenico$f<1854-1938>$0330136
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181   $ctxt$2rdacontent
182   $cc$2rdamedia
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200 10$aTrace elements in magnetic concentrates from stream sediments in southwestern New Mexico $ea potential tool for reconnaissance geochemical exploration in arid lands /$fby T.G. Lovering and J.A. Hedal
210  1$a[Reston, Va.] :$cDepartment of the Interior, Geological Survey, 1987.
210  2$aWashington :$cUnited States Government Printing Office.
215   $a1 online resource (iv, 31 pages) $cillustrations
225 1 $aU.S. Geological Survey bulletin ;$v1566
300   $aTitle from title screen (viewed Oct. 22, 2015).
320   $aIncludes bibliographical references (page 31).
517   $aTrace elements in magnetic concentrates from stream sediments in southwestern New Mexico 
606   $aTrace elements
606   $aOre deposits$zNew Mexico
606   $aMagnetite$zNew Mexico
606   $aGeochemical prospecting
606   $aGeochemical prospecting$2fast
606   $aMagnetite$2fast
606   $aOre deposits$2fast
606   $aTrace elements$2fast
607   $aNew Mexico$2fast
615  0$aTrace elements.
615  0$aOre deposits
615  0$aMagnetite
615  0$aGeochemical prospecting.
615  7$aGeochemical prospecting.
615  7$aMagnetite.
615  7$aOre deposits.
615  7$aTrace elements.
700   $aLovering$b T. G$g(Tom Gray),$f1921-1996,$01404144
702   $aHedal$b J. A.
712 02$aGeological Survey (U.S.),
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