ebrary, Inc, & Bergman, R. (2007). Reverse osmosis and nanofiltration (2nd ed.). American Water Works Association.

ebrary, Inc, and Robert Bergman. Reverse Osmosis and Nanofiltration. 2nd ed. Denver, Colo.: American Water Works Association, 2007.

ebrary, Inc, and Robert Bergman. Reverse Osmosis and Nanofiltration. 2nd ed. American Water Works Association, 2007.