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Ralph Arnold · Study
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Author
Ralph Arnold
2 works
· latest 1960
cluster: provisional
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40
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09
60
Most cited in this library
The first big oil hunt : Venezuela, 1911-1916
1960 · 34 citations
Santa Cruz folio, California
1909 · 6 citations
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2 shown
The first big oil hunt : Venezuela, 1911-1916
·
1960
·
1 author
34
citations
Santa Cruz folio, California
·
1909
·
3 authors
·
report
6
citations