Search Results       Your search for [subject]Sewage disposal plants -- United States -- Handbooks, manuals, etc returned 1 record.           Spellman's standard handbook for wastewater operators. by Spellman, Frank R.; Lancaster, Pennsylvania: Technomic Publishing, 1999. Subject: Sewage disposal -- Employees -- Certification -- United States -- Handbooks, manuals, etc; Sewage disposal plants -- United States -- Handbooks, manuals, etc.          Add to Book Cart Relevance: 38.65%