Micro-seismic method of determining the stability of underground openings
By: by Leonard Obert and Wilbur I. Duvall.
Contributors: Duvall, Wilbur I.
Series: Bulletin / Bureau of Mines ;; 573; Bulletin (United States. Bureau of Mines) ;; 573.
Publisher: U.S. G.P.O.
Published: 1957
Place of publication: Washington, D.C
Language: eng
Number of pages: 17
Subjects: Geology -- Research.; Microseisms.
Notes: Bibliography: p. [18].