Maidl, Bernhard Handbook of tunnel engineering (Vol.1) : structures and methods / Bernhard Maidl, Markus Thewes, Ulrich Maidl - Berlin : Ernst & Sohn, c2013. - xxviii, 454 p. ISBN: 9783433030486 Subjects--Topical Terms: Tunnels--Design and constructionTunneling Dewey Class. No.: 624.193 / MAI