seriesNo,seriesEntityName,seriesTitle,seriesDateRange,seriesArrangement,seriesDescription,seriesTotRetentDesc,seriesPrimaryClassCode,seriesExtentDesc 2868,Department of Natural Resources. Geological Survey,Investigation reports,1963-,Numerical by report number,"The investigation reports are usually in response to requests from state agencies. These reports contain an introduction\, background and purpose\, location and geological setting\, scope of work\, study methods\, interpretations\, conclusions\, references\, charts and maps.",Permanent. Retain until administrative need ends,Public,1.00 cubic foot 1 microfilm reel