00592nam a2200181Ia 4500001000700000003000500007005001700012008004100029010001700070100002200087245009400109260004600203300003700249490004500286650003500331650002100366651002300387131262BIBL20160527191903.0931004s1976    dcua                eng    afel36001785 10aEllis, S R2Local10aHistory of dredging and filling of lagoons in the San Juan area, Puerto RicocS.R. Ellis.  aWashingtonbU.S. Geological Surveyc1976.  aiv, 25 p.bmaps (fold in pocket) 0aWater-resources investigationsvno.38-76 0aLagoonszSan Juan, P.R.2Local 0aDredging.2Local 0aPuerto Rico2Local