2 books • 2 series
Wadeable Stream Monitoring in Allegheny Portage Railroad National Historic Site, Delaware Water Gap National Recreation Area, Johnstown Flood National Memorial, and Upper Delaware Scenic and Recreational River (Natural Resource Data Series Nps/Ermn/Nrds?2011/212)
Integrity of Benthic Macroinvertebrate Communities in Allegheny Portage Railroad National Historic Site and Johnstown Flood National Memorial (Natural Resource Data Series Nps/Ermn/Nrds?2010/025)