History of dredging and filling of lagoons in the San Juan area, Puerto Rico
Ellis, S R
History of dredging and filling of lagoons in the San Juan area, Puerto Rico S.R. Ellis. - Washington U.S. Geological Survey 1976. - iv, 25 p. maps (fold in pocket) - Water-resources investigations no.38-76 .
fel36001785
Lagoons--San Juan, P.R.
Dredging.
Puerto Rico
History of dredging and filling of lagoons in the San Juan area, Puerto Rico S.R. Ellis. - Washington U.S. Geological Survey 1976. - iv, 25 p. maps (fold in pocket) - Water-resources investigations no.38-76 .
fel36001785
Lagoons--San Juan, P.R.
Dredging.
Puerto Rico