1. Mathematics manual for water and wastewater treatment plant operators : basic mathematics for water and wastewater operators /: basic mathematics for water and wastewater operators. (2023) Authors: Spellman, Frank R Record Type: Book Extent: 1 online resource (330 pages), illustrations (black and white) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Mathematics manual for water and wastewater treatment plant operators. Basic mathematics for water and wastewater operators / (2014) Other Names: Spellman, Frank R Record Type: Book Extent: 1 online resource, illustrations View Content: Available online (eLD content is only available in our Reading Rooms) ↗