First-motion focal mechanism solutions for the IASPEI earthquakes
By: by Russell E. Needham.
Contributors: Geological Survey (U.S.)
Series: Open-file report -- 85-458.; Open-file report (Geological Survey (U.S.)) -- 85-458.
Publisher: U.S. Dept. of the Interior, Geological Survey
Published: 1985
Place of publication: [Reston, Va.?]
Language: eng
Format: Microform
Subjects: Seismometry
Notes: Distributed to depository libraries in microfiche.

Bibliography: p. 2.

Microfiche. [Denver, Colo. : U.S. Geological Survey, 1985]. 1 microfiche.