Changes in stratigraphic nomenclature in the Cretaceous system, east-central Puerto Rico Stratigraphic nomenclature, Puerto Rico Briggs, Reginald P. 1929-2009 creator author. Geological Survey (U.S.) issuing body. Puerto Rico Department of Industrial Research, sponsoring body. text bibliography Terminology. dcu 1969 monographic eng remote 1 online resource (31 pages) : illustrations. Reginald P. Briggs ; prepared in cooperation with the Commonwealth of Puerto Rico Economic Development Administration, Industrial Research Department. Title from title screen (viewed September 15, 2014). Includes bibliographical references (pages 29-31). nwpr--- Geology Nomenclature Geology Puerto Rico Geology, Stratigraphic Cretaceous Cretaceous Geologic Period Geology Geology, Stratigraphic Puerto Rico From 65 to 140 million years ago fast I 19.3:1274-O I 19.3:1274-O Changes in stratigraphic nomenclature in the Cretaceous system, east-central Puerto Rico Briggs, Reginald Peter, 1929- (OCoLC)3603803 Geological Survey bulletin ; 1274-O Contributions to stratigraphy https://purl.fdlp.gov/GPO/gpo69538 COP 140926 20211120174608.0 in00003718036 eng