RESOURCES

• Annotated Teacher's Edition: Environmental Science, Holt, Rinehart, Winston, Inc. 1996.
   
• Ray Roberts State Park http://www.tpwd.state.tx.us/rayrob/rayrob.htm
   
• Central Region Wastewater System http://www.trinityra.org/fedwtrp/joepool.htm
   
• "Investigating Water Problems: A Water Analysis Manual", Charles E. Renn, Ph.D., LaMotte Co., 1970
   
• Carolina Shirt Pocket Water Test Kit, Instructions 65-2748, Carolina Biological Supply Co., 2700 York Rd. Burlington, North Carolina 27215.

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