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0200059090 20040812140104.0 s1974 nvua fr |000|||eng | NGL a631 区域小地震的长周波谱. chi Near field small earthquake long period spectrum. Reno : University of Nevada, 1974. 19 p. : ill. Annual report 1 June 1973 -31 March 1974. NGL 294867 631 N27f afqy b1 efqy0411