1. An acre of marsh is worth;Benson;N.Y. State Conserv.,1965
2. Prairie potholes from a continental viewpoint;Crissey,1969
3. Status and Trends of Wetlands and Deepwater Habitats in the Coterminous United States, 1950s and 1970s;Frayer,1983
4. Competition for Wetlands in the Midwest: An Economic Analysis;Goldstein,1971
5. The Value of the Tidal Marsh;Gosselink,1974