Indiana Dunes National Lakeshore - VSP Visitor Study #58 [Summary]
1993. Indiana Dunes National Lakeshore - VSP Visitor Study #58 [Summary]
This report describes the results of a visitor study at Indiana Dunes National Lakeshore during July 12- 18, 1993. A total of 510 questionnaires were distributed and 360 returned, a 70% response rate.