Proceedings.
Subtitle: Editor: Howard L. Hartman.  Sponsored by School of Engineering, Sacramento State College.
Contributors: Hartman, Howard L,; Symposium on R/D in Rapid Excavation, Sacramento State College, 1968
Publisher: Sacramento State College]
Published: 1969
Place of publication: [Sacramento
Language: eng
Subjects: Excavation -- Congresses; Excavating machinery -- Congresses; Tunneling -- Congresses