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100   $a20180506d2017      uy             0
101 0 $aeng
135   $aurcnu||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aTunnels /$fby Virginia Loh-Hagan
210  1$aAnn Arbor :$cCherry Lake Publishing,$d[2017]
215   $a1 online resource (24 pages) $cillustrations
225 0 $a21st century junior library. Extraordinary engineering
311   $a1-63472-167-5 
320   $aIncludes bibliographical references and index.
327   $aWhat are tunnels? -- How do soft ground tunnels work? -- How do rock tunnels work? -- How do underwater tunnels work? -- Try this!
330   $a"The 21st Century Junior Library Extraordinary Engineering series explains how important feats of engineering are accomplished. Tunnels examines the engineering concepts that make these important structures possible. Sidebars encourage readers to engage in the material by asking deeper questions or conducting individual research. An activity, full color photos, a glossary, and a listing of additional resources all enhance the learning experience"--$cProvided by publisher.
606   $aTunnels$vJuvenile literature
606   $aTunnels$xDesign and construction$vJuvenile literature
615  0$aTunnels
615  0$aTunnels$xDesign and construction
676   $a624.193
700   $aLoh-Hagan$b Virginia$01225467
801  0$bMiAaPQ
801  1$bMiAaPQ
801  2$bMiAaPQ
906   $aBOOK
912   $a9910154836103321
996   $aTunnels$92886877
997   $aUNINA