TY  - BOOK
AU  - 
ED  - Puerto Rico.
ED  - Puerto Rico.
ED  - Geological Survey (U.S.)  
TI  - Water resources of the lower Rio Grande de Arecibo alluvial valley, Puerto Rico
T2  - Water resources investigations report
PY  - 1986///
CY  - San Juan, P.R., Denver, Colo.
PB  - U.S. Dept. of the Interior, Geological Survey, Books and Open-File Reports [distributor]
KW  - Hydrology
KW  - Puerto Rico
KW  - Arecibo Region
KW  - Local
N1  - Distributed to depository libraries in microfiche; One map on folded sheet in pocket; Includes bibliographical references (p. 38)
ER  -