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Iris Dataset
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Sperry_Drilling?oldid=582695217
Sperry_Drilling?oldid=582695217
http://en.wikipedia.org/wiki/Sperry_Drilling?oldid=582695217
Sperry Drilling
wasDerivedFrom
Sperry_Drilling?oldid=582695217
http://en.wikipedia.org/wiki/Sperry_Drilling?oldid=582695217