Two studies of Tinicum Marsh, Delaware and Philadelphia Counties, Pennsylvania
Subtitle: The natural features of Tinicum Marsh, with particular emphasis on the vegetation
By: [by] Jack McCormick. Tinicum Marsh as a water purifier [by] Robert R. Grant, Jr., and Ruth Patrick.
Contributors: Grant, Robert R.; Patrick, Ruth, 1907-; Conservation Foundation.
Publisher: Conservation Foundation
Published: 1970
Place of publication: [Washington]
Language: eng
Number of pages: 123
Subjects: Natural history -- Pennsylvania -- Tinicum Marsh.; Water -- Purification -- Pennsylvania -- Tinicum Marsh.; Tinicum Marsh, Pa.