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This site, hosted by the University of Nebraska - Lincoln Extension, presents an overview of points to consider when selecting a sprinkler package. Some points that are explained are soil texture, infiltration rates,...
Water Quality Information Center's database of "Online Documents Covering Water and Agriculture" has an improved interface and more titles. You can now access more than 1,700 documents. The topics include things such as...
In this article, presented by HowStuffWorks.com, shows how a submarine dives and surfaces in the water. It also shows how life support is maintained, how the submarine gets its power, how a submarine finds its way in...
Take a look inside a typical water heater so you can understand how it works -- and why it sometimes doesn't. Author Marshall Brain gives a fairly comprehensive look at this everyday appliance. Images, videos and text...
The Institute for Convergence of Optical and Network Systems (ICONS) is a program at the City College of San Francisco Computer Networking and Information Technology (CNIT) Department to develop technician training in...
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