User contributions
- 06:00, 12 February 2010 (diff | hist) . . (+1) . . User:Demotech
- 05:59, 12 February 2010 (diff | hist) . . (+1) . . User:Demotech (spelling error)
- 05:58, 12 February 2010 (diff | hist) . . (+1,400) . . N User:Demotech (Introduction to Demotech, design for self-reliance)
- 23:36, 26 April 2008 (diff | hist) . . (+81) . . Rope pump (→External links: Added link Demotech info)