Depicts oil derrick, pipeline, and emblem of the 6th Annual Arab Petroleum Congress held in Baghdad, Iraq in March 1967.
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“Iraqi Postage Stamp Commemorating the 6th Annual Arab Petroleum Congress, Baghdad.” Iraq, 1967. Witco Stamp Collection, Box 5. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/k35694332.
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