F628.063PfePfeffer,JhonTedTransactionsofthesixteenthannualCoferenceonSanitaryEngineerring,LawrenceKan,SchoolofEngineerandarchitecture,TheUniversityofKnasas,196651p.ilus,gráficos,tablas,28cm(TheBulleringofengineeringandarchitecture,no.56)Bibliografíaalfinaldealgunoscapítulos