Oil and gas infrastructure in the Caspian Sea region: March 2012.
CIA
<p>Library of Congress Geography and Map Division Washington, D.C. 20540-4650 USA
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DIGITAL ID g5692c ct003595 <a rel="nofollow" class="external free" href="http://hdl.loc.gov/loc.gmd/g5692c.ct003595">http://hdl.loc.gov/loc.gmd/g5692c.ct003595</a>