Engeling, Paul Douglas Geomechanical model study of the behavior of lined tunnels in jointed rock media / Paul DouglasEngeling, - University of Illinois at Ur - England Universirty Microfilms 1972 - baxi, 188 p. Includes references. ISBN: 256156 Subjects--Topical Terms: Foundations Dewey Class. No.: 624.15 / ENG