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200 00$aRecycled aggregates$b[electronic resource] $eprofitable resource conservation
210  1$a[Reston, Va.] :$cU.S. Dept. of the Interior, U.S. Geological Survey,$d[1999]
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300   $aTitle from title screen (viewed on Apr. 28, 2004).
300   $a"December 1999"
320   $aIncludes bibliographical references.
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