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Ralph Jackson Roberts has written:
'The Rose Creek tungsten mine, Pershing County, Nevada' -- subject(s): Tungsten mines and mining, Ore deposits, Geology, Tungsten ores, Mines and mineral resources
'Mineral deposits of Central America' -- subject(s): Mines and mineral resources
'Quicksilver deposits of the Bottle Creek district, Humboldt County, Nevada' -- subject(s): Cinnabar, Ore deposits, Mercury mines and mining, Mercury ores, Geology, Mines and mineral resources
'Stratigraphy and structure of the Antler Peak quadrangle, Humboldt and Lander Counties, Nevada' -- subject(s): Geology
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What has the author Ralph A Roberts written?
Ralph A. Roberts has written: 'A Collection Of Examples And Problems On Conics And Some Of The Higher Plane Curves' 'A Collection Of Examples On The Analytical Geometry Of Plane Conics'
What has the author Ralph Kull written?
Ralph Kull has written: 'Ralph Kull'
What has the author Ralph Boekholt written?
Ralph Boekholt has written: 'Mendoeng'
What has the author Ralph Chessington written?
Ralph Chessington has written: 'Pope'
What has the author Ralph Emery written?
Ralph Emery has written: 'Memories'
What has the author Ralph Howell written?
Ralph Howell has written: 'Why work?'
What has the author Ralph Williams written?
Ralph Williams has written: 'How I became a governor'
What has the author Ralph Grishman written?
Ralph Grishman has written: 'Linguistica computazionale'
What has the author Ralph Bates written?
Ralph Bates has written: 'Lean men'
What has the author Ralph A Bolton written?
Ralph A. Bolton has written: 'Away And Far Out'
What has the author Ralph Stob written?
Ralph Stob has written: 'Thinking and smiling'
What has the author Ralph Birdsall written?
Ralph Birdsall has written: 'The story of Cooperstown'
