The Poconos an illustrated natural history guide / [electronic resource] :
Carl S. Oplinger, Robert Halma ; illustrations by Robert Halma.
- Rev. and expanded ed.
- New Brunswick, N.J. : Rivergate Books, c2006.
- xx, 342 p. : ill., maps.
Includes bibliographical references (p. 317-327) and index.
Electronic reproduction. Palo Alto, Calif. : ebrary, 2013. Available via World Wide Web. Access may be limited to ebrary affiliated libraries.