Books by Alvin J. Engler:
![[Info]](https://onlinebooks.library.upenn.edu/info.gif)
Engler, Alvin J.: Measurement of Blast-Induced Ground Vibrations and Seismograph Calibration (report of investigations #8506; Washington: U.S. Dept. of the Interior, Bureau of Mines, 1967), also by Mark S. Stagg (page images at HathiTrust)
Additional books by Alvin J. Engler in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Engler, Alvin J.: Airblast instrumentation and measurement techniques for surface mine blasting (U.S. Dept. of the Interior, Bureau of Mines, 1981), also by Virgil J. Stachura and D. E. Siskind (page images at HathiTrust)
Find more by Alvin J. Engler at your library, or elsewhere.