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Energy map of Africa / produced by Petroleum Economist in association with Eskom ; designed by D.A. Burles.
- 333.79096 AF F 1993
- Petroleum Economist Ltd.,
- Petroleum Economist,
- London :
-
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 :