Kristina K Callahan

3 books • 3 series

Aug 28, 2013
Cover of 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

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)

Aug 28, 2013
Cover of Condition of Vegetation Communities in Allegheny Portage Railroad National Historic Site and Johnstown Flood National Memorial

Condition of Vegetation Communities in Allegheny Portage Railroad National Historic Site and Johnstown Flood National Memorial (Natural Resource Data Series Nps/Ermn/Nrds?2010/038)

Aug 28, 2013
Cover of Integrity of Benthic Macroinvertebrate Communities in Allegheny Portage Railroad National Historic Site and Johnstown Flood National Memorial

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)