P-ISSN 0002-9599
E-ISSN 1945-452X
Vol. s4-36, Issue 213, 1913September 01, 1913 EDT
A Method of Increasing and Controlling the Period in Vertical Motion Seismographs
A Method of Increasing and Controlling the Period in Vertical Motion Seismographs
Frank A. Perret,
Perret, F. A. (1913). A Method of Increasing and Controlling the Period in Vertical Motion Seismographs. American Journal of Science, s4-36(213), 297–300. https://doi.org/10.2475/ajs.s4-36.213.297