Oral history interview with Dr. Daniel Okun, October 22, 1985Daniel Alexander Okun · First published 2004Open the Tome
Abastecimiento de aguas y remoción de aguas residualesGordon Maskew Fair, John Charles Geyer, Daniel Alexander Okun · First published 2002Open the Tome
Tratamiento de aguas superficiales para países en desarrolloDaniel Alexander Okun · First published 1990Open the Tome
Community piped water supply systems in developing countriesDaniel Alexander Okun · First published 1987Open the Tome
Night soil disposal and effluent reuse in Maseru, LesothoDaniel Alexander Okun · First published 1982Open the Tome
Community wastewater collection and disposalDaniel Alexander Okun · First published 1975Open the Tome
