TY  - BOOK
ED  - Geological Survey (U.S.)  
TI  - Cretaceous and Lower Tertiary Stratigraphy in west-central Puerto Rico
PY  - 1967///
CY  - Washington
PB  - U.S. Govt. Print. Off
KW  - fast
KW  - Geology, Stratigraphic
KW  - Puerto Rico
N1  - Prepared in cooperation with the commonwealth of Puerto Rico Economic Development Administration, Industrial Research Department."; Includes bibliographical references (pages 34-35)
ER  -