TY  - BOOK
AU  - 
AU  - 
ED  - 
TI  - A reconnaissance study of the beach sands of Puerto Rico
T2  - Geological Survey bulletin
PY  - 1957///
CY  - Washington,[D.C.]
PB  - U.S. G.P.O.
KW  - Geology
KW  - Puerto Rico
KW  - fast
N1  - "Prepared in cooperation with the Economic Development Administration of the Commonwealth of Puerto Rico."; Includes Bibliographical references (page 303) and index
ER  -