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101 0 $aeng
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181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 00$aCoalbed methane$b[electronic resource] $ean untapped energy resource and an environmental concern
210  1$a[Denver, CO] :$cU.S. Geological Survey, Energy Resource Surveys Program,$d[1997]
225 1 $aUSGS fact sheet ;$v019-97
300   $aTitle from title screen (viewed on July 12, 2004).
300   $a"Dudley Rice."
300   $a"Last updated 17-Jan-1997."
517   $aCoalbed methane 
606   $aCoalbed methane$zUnited States
606   $aCoalbed methane$xEnvironmental aspects$zUnited States
615  0$aCoalbed methane
615  0$aCoalbed methane$xEnvironmental aspects
712 02$aGeological Survey (U.S.)
712 02$aEnergy Resource Surveys Program (Geological Survey)
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996   $aCoalbed methane$93434054
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