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035   $a(EXLCZ)995470000002401403
100   $a20091211d2009      ua             0
101 0 $aeng
135   $aurmn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aCarbonatites of the world, explored deposits of Nb and REE--database and grade and tonnage models$b[electronic resource] /$fby Vladimir I. Berger, Donald A. Singer, and Greta J. Orris
210  1$aReston, Va. :$cU.S. Geological Survey,$d2009.
215   $a1 online resource (iii, 17 pages) $cillustrations, map
225 1 $aOpen-file report ;$v2009-1139
300   $aTitle from title screen (viewed Sept. 10, 2009).
320   $aIncludes bibliographical references (pages 16-17).
410  0$aU.S. Geological Survey open-file report ;$v2009-1139.
606   $aCarbonatites$vDatabases
606   $aNiobium$vDatabases
606   $aRare earth metals$vDatabases
615  0$aCarbonatites
615  0$aNiobium
615  0$aRare earth metals
700   $aBerger$b Vladimir I$01400741
701   $aSinger$b D. A$01387101
701   $aOrris$b G. J$01384348
712 02$aGeological Survey (U.S.)
801  0$bGPO
801  1$bGPO
906   $aBOOK
912   $a9910699250303321
996   $aCarbonatites of the world, explored deposits of Nb and REE--database and grade and tonnage models$93468217
997   $aUNINA