Engineering solutions to environmental constraints :  I-70 over Vail Pass / 
Transportation Research Board, Commission on Sociotechnical Systems, National Research Council. 
 - Washington, D.C. :  National Academy of Sciences,  1979. 
 - iii, 47 p. :  ill. ;  28 cm. 
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<br/><br/><label>ISBN: </label>0309029678 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Express highways--Design and construction.--Colorado--Vail Pass<br/>MCE<br/>Roads--Environmental aspects--Colorado--Vail Pass.
<br/><br/><label>Dewey Class. No.: </label>625.709788  / NAT