Cretaceous and Lower Tertiary stratigraphy in Northwestern and Puerto Rico - McIntyre, David H.; Puerto Rico. Dept. of Industrial Research (Washington, United States Government Printing Office, 1970)
Work done in cooperation with the Department of Industrial Research, Puerto Rico Economic Development Commission
Keywords: Geology, Stratigraphic -- Cretaceous; Geology, Stratigraphic -- Tertiary; Geology -- Puerto Rico