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Petroleum production in developing countries : problems and prospects
Lowinger, Thomas C., (1982)
The economics of crude petroleum production
Bradley, Paul G., (1967)
Modeling petroleum product demand in Nigeria using Structural Time Series Model (STSM) approach
Abdullahi, Aliyu Barde, (2014)
Quarterly external debt statistics / Special data dissemination system
Quarterly public sector debt
International debt statistics