Bruce, Robert A.

Remote transducer based on coherent mixing of backscattered laser light / by Robert A. Bruce. - [Washington] : U.S. Dept. of the Interior, Bureau of Mines, 1977. - [3], 13 p. : ill. - Report of investigations ;�8220 . - United States. Bureau of Mines. Report of investigations ; 8220. . - Report of investigations (United States. Bureau of Mines) ; 8220 .

91055198


Transducers.
Vibration transducers.
Lasers in mining.