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Filters: Keyword is water pollution and Author is Requena, L.F.  [Clear All Filters]
1993
Requena, L.F. and Quintanilla, E. de, El Salvador : program for monitoring surface and groundwater in the watershed between the Barra de Santiago and El Impossible, vol. no. 425. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. xiii, 50 p. + 9 appendices: 2 map, 3 tab., 20 photogr., 1993.
1991
Requena, L.F. and Myton, B.A., Surface and groundwater contamination in selected watersheds in Southwestern El Salvador, vol. no. 354. Environmental Health Project (EHP), Arlington, VA, USA, p. xvii, 152 p.: 1 fig., 4 maps, photogr., 16 tables, 1991.