Puerto Rico seismic network data report of earthquakes located by the programs HYPO71 and HYPOELLIPSE, July 1, 1975-December 31, 1977 
by R.L. Dart ... [et al.]. 
 - Arlington, Va. (1200 South Eads Street, Arlington, Va. 22202  Free on Application to Branch of Distribution, U.S. Geological Survey  1980. 
 - iii, 43 p.  8 ill., maps. 
 - Geological Survey circular  821 .
<br/><br/><label>LCCN: </label>gp 81002587  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Seismology--Tables.--Puerto Rico<br/>Seismological stations--Tables.--Puerto Rico
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico
<br/><br/><label>GPO Item No.: </label>620-A 
<br/><br/><label>Gov. Doc. Class. No.: </label>I 19.4/2:821