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| | References - Puerto Rico |
 | | Berryhill, H.L., Jr., Geology of the Ciales Quadrangle, Puerto Rico, 84 pp., 1965. |
 | | Larue, D.K., and H. Ryan, Extensional tectonism in the Mona Passage, Puerto Rico and Hispaniola: A preliminary study, in Transactions of the 12th Caribbean Geological Conference, Aug. _ - __, 1989, St Croix, U.S. Virgin Is., edited by D.K. Larue and G. Draper, pp. |
 | | McCann, W.R., On the earthquake hazards of Puerto Rico and the Virgin Islands, Bulletin of the Seismological Society of America, 75, 251-262, 1985. |
| www.ig.utexas.edu /research/projects/puerto.rico/refs.htm (3042 words) |
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