Preliminary list of natural areas in Pennsylvania
By: [by] Kimball S. Erdman & Paul G. Wiegman.
Contributors: Wiegman, Paul G., joint author.
Publisher: Western Pennsylvania Conservancy, Natural Areas Inventory
Published: 1974
Place of publication: [Pittsburgh]
Language: eng
Number of pages: 105
Subjects: Natural areas -- Pennsylvania.
Notes: Bibliography: p. 105-[106]