PUCPR Search for 'an:173514'

Submarine spring explorations northwest coast of Puerto Rico

By Percious, Donald J..
Mayaguez, P.R. Water Resources Research Institute, University of Puerto Rico, Mayaguez Campus, School of Engineering 1971 .
48 leaves , "Final report"--Cover. | Supported in part by the U.S. Dept. of the Interior under the Water Resources Research Act of 1964, Public Law 88-379; project A-029-PR. | "November, 1971." | "March 1972"--Cover. | "UPRICO/WRRI/FR/71/29/1." 28 cm..

Hydrology and water quality of the principal springs in Puerto Rico

By Guzmán Ríos, Senén.
San Juan, P.R. Geological Survey 1988 .
v, 30 p.

San Marcos and Comal Springs and associated aquatic ecosystems (revised) recovery plan (short title: San Marcos/Comal (revised) recovery plan) for San Marcos gambusia (Gambusia georgei), Fountain darter (Etheostoma fonticola), San Marcos salamander (Eurycea nana), Texas wild-rice (Zizania texana), Texas blind salamander (Typhlomolge rathbuni)

[Austin, Tex.] The Service 1996 .
x, 121 p. 28 cm..