Earthquake hypocenters in Washington and northern Oregon, 1987-1989, and operation of the Washington regional seismograph network
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02a0019084;20011205d1994 ekmy0engy01;eng;a z 000yy;r;Earthquake hypocenters in Washington and northern Oregon, 1987-1989, and operation of the Washington regional seismograph network;R.S. Ludwin ... et al;Olympia;Washington State Department of Natural Resources. Division of Geology and Earth Resources;1994;iv, 40 p.;ill;Information Circular;Washington Division of Geology and Earth Resources;no.89;2001b;aInformation Circular ; fWashington Division of Geology and Earth Resources ; vno.89;华盛顿州和俄勒冈州北部1987-1989年的地震震源与华盛顿州区域地震网的运作;a263.942;Ludwin;R.S.;101;456881;P;254.2;In3w;v89 ; r279.27;a03;b1;cP