IV 
Geological Survey’s National Wetlands Research Center in Lafayette, LA collected the 
Proceedings papers and organized the printing. The ISPRS working group II/2 is thankful for all 
his efforts in this process. We also owe special thanks to all other organizations that helped us 
making this workshop a success 
Manfred Ehlers Vechta, 
Chairperson, ISPRS WG II/2 February 1997