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Energy map of Venezuela / produced in association with Petroleos de Venezuela S.A. [PDVSA] ; layout by D.A. Burles.
- 912.87
- Petroleum Economist Ltd.
- Petroleum Economist,
- c1991.
- London :
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Energy map of Algeria / produced by The Petroleum Economist Ltd. in association with Sonatrach.
- 333.790965
- Petroleum Economist Ltd.
- Petroleum Economist,
- c1994.
- London :