10, [2] leaves ; 28cm.
Salt marsh values - Duval - Nassau County area by George P. Spinner and Helen P. Bird.
Cover title.
"Purpose of this paper is to evaluate the biological worth of the salt marsh areas in Duval and Nassau Counties as related to sport and commercial fisheries, wildlife, recreation, scientific study, and other uses."
A copy of a typewritten manuscript.
Reference list included as well as biographical data for George P. Skinner, Helen P. Bird, and the Southeastern Environmental Council.