http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
One of the largest stockpiles of chemical weapons was produced in the United States, most produced in the 1950s and 60s. They have been sitting idle since then, and some of them are beginning to leak, putting the neighboring towns in danger. Steve Kroft reports.
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