American Water Works Association & ebrary, Inc. (2009). Ductile-iron pipe and fittings (3rd ed.). American Water Works Association.

American Water Works Association and Inc ebrary. Ductile-iron Pipe and Fittings. 3rd ed. Denver, Colo.: American Water Works Association, 2009.

American Water Works Association and Inc ebrary. Ductile-iron Pipe and Fittings. 3rd ed. American Water Works Association, 2009.