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SOURCE: National Geologic Map Database
DATE: Thu Jan 15 22:22:47 2009
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Entries 1 to 2 of 2.
(Any non-scaled publications are at end of list.)

Scale between 1:100,000 and 1:500,000

Graphic for a Map in NGMDB library
Briggs, R.P., 1964, Provisional geologic map of Puerto Rico
   and adjacent islands: U.S. Geological Survey, Miscellaneous
   Geologic Investigations Map I-392, scale 1:240000.
Blank placeholder for unscanned, non_digital product
Briggs, R.P. and Akers, J.P., 1965, Hydrogeologic map of Puerto
   Rico and adjacent Islands: U.S. Geological Survey, Hydrologic
   Investigations Atlas HA-197, scale 1:240000.

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U.S. Department of the Interior, U.S. Geological Survey, Reston, VA, USA
URL http://ngmdb.usgs.gov/ngmdb/ngm_catalog.ora.html
Database project personnel.
Generated: 15-Jan-2009