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  • Front Matter


    WORLD DATA CENTER A
    for
    Solid Earth Geophysics

    REPORT SE-20

    MANUAL
    OF
    SEISMOLOGICAL OBSERVATORY
    PRACTICE

    Editor

    P. L. Willmore
    Institute of Geological Sciences
    Edinburgh, Scotland

    September 1979
    Reprinted September 1982

    Published by World Data Center A for Solid Earth Geophysics

    U.S. DEPARTMENT OF COMMERCE
    NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION
    ENVIRONMENTAL DATA AND INFORMATION SERVICE
    Boulder, Colorado 80303, USA


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