| http://www.w3.org/ns/prov#value | - Full text not archived in this repository.To link to this article DOI: 10.1093/jel/eqm039 Abstract/SummaryAt present, there is much anxiety regarding the security of energy supplies; for example, the UK and other European States are set to become increasingly dependant upon imports of natural gas from states with which political relations are often strained.
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