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      Hydrogeology of the Wisconsin River Valley in Marathon County, Wisconsin- 
  
  Hydrogeology of the Wisconsin River Valley in Marathon County, Wisconsin1988 Report: 66 p. + maps (scale 1:100,000) 
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  Elevation of the Base of the Wausau Aquifer, Marathon County, Wisconsin [plate 1]1988 Map: Scale 1:62,500 
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  Elevation of the Water Table in the Wisconsin River Valley, Marathon County, Wisconsin [plate 2]1988 Map: Scale 1:62,500 
 
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