Agricultural Measurement Instruments - Site developed by Spectrum Technologies describing environmental monitoring equipment.

Spectrum Technologies - Site developed by Spectrum Technologies, Inc. and describes their climatic, moisture, EC and other equipment.

University of California Pest Management Project - contains information on all aspects on management of diseases, insects, and weeds.

Wiley Books - A commercial site developed by John Wiley and Sons and describes their for-sale books on many aspects of Agriculture including floriculture.