Don D. Ratnayaka

title	ISBN-13 (ISBN-10)	year of publica- tion	other author(s)
Twort's Water Supply	978-0-7506-6843-9 (0-7506-6843-1)	2009	Malcolm J. Brandt · Michael Johnson
Water Supply	978-0-340-72018-9 (0-340-72018-2)	2000	Alan C. Twort · Malcolm J. Brandt