REFERENCES 
Johnson, W. 
1974: Lake Classification Utilizing ERTS Imagery. 
Proceedin gs. Environmental Monitoring and Data 
Acquisition Seminar. Vol. III. Spring 1974. 
University of Wisconsin - Madison. 
Klooster, S., and Scherz, J. 
1974. "Water Quality Determination by Photographic 
Analysis." Photogrammetric Engineering . August. 
NASA - National Aeronautics and Space Administration 
1972: "ERTS Data Users Handbook." Goddar Space Flight 
Center. Beltsville, Maryland. 
Scherz, J., Sydor, M., and Van Domelen, J. 
1973: "Aircraft and Satellite Monitoring of Water Quality 
in Lake Superior Near Duluth." Proceedings. ERTS 
Symposium. Washington, D.C, December. 
Scherz, J. and Van Domelen, J. 
1973: "Lake Superior Water Quality Near Duluth From 
Analysis of Aerial Photos and ERTS Imagery." Pro 
ceedings. International Symposium on Remote Sensing 
and Water Resources Management. Burlington, Ontario 
Canada. June. 
Scherz, J. , Van Domelen, J. , and Klooster, S. 
1973: "Aerial and Satellite Photography - A Valuable Tool 
for Water Quality Investigation." Proceedings. 
ASP-ACSM 1973 Fall Convention. Walt Disney World, 
Orlando, Florida. October.