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1
Aquatic plants of Pennsylvania a complete reference guide /
Published 2011Subjects: “…Aquatic plants Pennsylvania Identification.…”
An electronic book accessible through the World Wide Web; click to view
Electronic eBook -
2
The Poconos an illustrated natural history guide /
Published 2006Subjects: “…Natural history Pennsylvania Pocono Mountains Guidebooks.…”
An electronic book accessible through the World Wide Web; click to view
Electronic eBook