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200 1 $aTheory of Algorithms$fA.A. Markov.
210   $aMoscow$cAcademy of Sciences of the USSR$d1954.
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200 14$aThe Federal Railroad Administration can improve highway-rail grade crossing safety by ensuring compliance with accident reporting requirements and addressing sight obstructions$b[electronic resource] $eFederal Railroad Administration /$f[Kurt W. Hyde]
210  1$a[Washington, D.C.] :$cU.S. Dept. of Transportation, Office of the Secretary of Transportation, Office of Inspector General,$d[2007]
215   $a1 online resource (33 pages) $ccolor illustrations, color map
300   $aTitle from title screen (viewed on July 23, 2012).
300   $a"Report Number: MH-2007-044."
300   $a"Date Issued: May 3, 2007."
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606   $aHighway-railroad grade crossings$zUnited States$xSafety measures
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