Wahlstrom, Ernest Eugene 1909- Tunneling in rock / by Ernest E. Wahlstrom. - Amsterdam: New York Elsevier Scientific Pub. Co., 1973. - xiii, 250 p. : illus ; 25 cm. - 3 . Includes bibliographies. ISBN: 0444410643 Subjects--Topical Terms: Rock mechanicsTunneling Dewey Class. No.: 624.19