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(Q30771)
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Statements
subclass of
Mining
1 reference
data source
Standard Industrial Classification
has part
Crude Petroleum and Natural Gas Extraction
1 reference
data source
North American Industry Classification System
NAICS Code
21111
point in time
1 January 2012
1 January 2007
1 January 2002
1 January 1997
1 reference
data source
North American Industry Classification System