National Wetlands Research Center 



Production Staff 



Chief, Technical 



Support Office GayeS. Farris 



Writer/Editor Beth A. Vairin 



Visual Information 



Specialist Susan M. Lauritzen 



Editorial Assistant Rhonda F. Davis 



Other Production Assistance 



Technical Editors Mary Catherine Hager, 

 Lafayette, Louisiana, 

 and 



DarylS.McGrath, 

 Johnson Controls World Services 



Technical Typist Shannon E. Price, 



Johnson Controls World Services 



Technical Illustrator Natalie Y. Gormanous, 



Johnson Controls World Services 



NOTE: Mention of trade names or commercial products does not constitute endorsement or recommendation for use by the U.S. 

 Government. 



