LINKS TO USEFUL HYDROPONIC ARTICLES,WEBSITES AND RESOURCES
Protected Cropping Australia is the peak industry body for the Australian Hydroponic & Greenhouse Industry.
For a really good overview of hydroponics, see the Wikipedia hydroponic entry.
The Institute of Simplified Hydroponics develops projects in the Third World utilising hydroponic food production with basic techniques which can be adapted to local conditions and readily applied.
You can join the Google Hydroponics List for free at:
A good collection of hydroponic informational links at the Steiger family's website.