DUG

Education and Entertainment

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HART ENERGY PUBLISHING LLLP

ETHANOL AND BIODIESEL NEWS

Education and Entertainment

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HART ENERGY PUBLISHING, LLLP

Feb 10, 2009
ISEE INTERNATIONAL SUSTAINABLE ENERGY EXCHANGE

Advertising and Business and 2 other

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HART ENERGY PUBLISHING, LLLP

GASIFICATION NEWS

Paper Goods and Printed Matter

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HART ENERGY PUBLISHING, LLLP

Aug 7, 2007
HART GULF STATES PETROLEUM DIRECTORY

Paper Goods and Printed Matter

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HART ENERGY PUBLISHING LLLP

Aug 26, 2003
PIPELINE AND GAS TECHNOLOGY

Paper Goods and Printed Matter

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HART ENERGY PUBLISHING LLLP

Jun 17, 2003
HART GULF STATES PETROLEUM DIRECTORY

Advertising and Business

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HART ENERGY PUBLISHING, LLLP

Dec 8, 2009
E&PNET

Computer and Scientific

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HART ENERGY PUBLISHING LLLP

Dec 26, 2000
ENERGY MARKETS

Paper Goods and Printed Matter

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HART ENERGY PUBLISHING LLLP

Jan 19, 1999
HART ROCKY MOUNTAIN PETROLEUM DIRECTORY

Paper Goods and Printed Matter

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HART ENERGY PUBLISHING LLLP

Aug 8, 1995