por Fair, Gordon Maskew, 1894-1970 [autor] | Fair, Gordon Maskew, 1894-1970. Water and wastewater engineering | Okun, Daniel Alexander [autor] | Geyer, John Charles, 1906-1995 [autor] | Ayanegui Jaríz, Salvador [traductor].
por Fair, Gordon Maskew, 1894-1970 [autor] | Geyer, John Charles, 1906-1995 [autor] | Ayanegui Jaríz, Salvador [traductor] | Okun, Daniel Alexander [autor] | Patino Olivares, Armando [Rev.].
por Fair, Gordon Maskew, 1894-1970 [autor] | Ayanegui Jaríz, Salvador [traductor] | Okun, Daniel Alexander [autor] | Geyer, John Charles, 1906-1995 [autor].
por Schulz, Christoper R [autor] | Okun, Daniel Alexander [autor].
por Schulz, Christopher R [autor] | Okun, Daniel Alexander [autor] | Water And Sanitation For Health Project (e. U. ) | Schulz, Christopher R. Surface water treatment for communities in developing countries.
por Fair, Gordon Maskew, 1894-1970 [autor] | Okun, Daniel Alexander | Geyer, John Charles, 1906-1995.