Hopefully this will somewhat satisfy my desire to keep the book updated. I have refrained from any editorializing on any of the material. I have simply just cut and paste from various sources. I have edited some material out where necessary.
Copyrights apply where necessary.
Permission granted for electronic use in non-profit efforts. The Water Management Research Laboratory in Fresno, CA started last week their own worldwide Web pages. It allows us to prepare documents where text and images are both available for people who visit our site. The pages that have been developed for the Water Management site will make research, done at the WMRL, more accessible to others. A rough version of the FAQ for Trickle-l is scheduled to appear somewhere end next week, and the progress report of 1994 is also coming soon.