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|a Sistema Bibliotecario Universidad de El Salvador
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|a Ayala Durán, Carlos Antonio
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|a Manual para el diseño de unidades de tipo biológico en plantas de tratamiento de aguas residuales domésticas en San Salvador /
|c Carlos Antonio Ayala Durán, Elí Díaz Castillo
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|a San Salvador :
|b Universidad de El Salvador,
|c 2008
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|a Tesis (Ingeniería Civil) -- Universidad de El Salvador, San Salvador, 2008
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|a Díaz Castillo, Elí
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| 700 |
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|a Herrera Mirón, Ricardo Ernesto
|e Asesor
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|a Guerrero, Luis Alberto
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|a Meza, Flavio Miguel
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