Test and Calibration of the seismic research observatory /

By Peterson, Jon. Albuquerque, New Mexico The Survey 1980 . 86 p. 28 cm..

IRIS/USGS plans for upgrading the global seismograph network /

By Peterson, Jon. [Denver, Colorado?] U.S. Department of Interior. Geologycal Survey 1989 . iii, 42 p. , La biblioteca posee 3 ejemplares. Revised feb. 1992, jun 1993, apr 1994. 28 cm..

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Test and Calibration of the seismic research observatory /

IRIS/USGS plans for upgrading the global seismograph network /