Integrity of Benthic Macroinvertebrate Communities in Allegheny Portage Railroad National Historic Site and Johnstown Flood National MemorialCaleb Tzilkowski, Kristina Callahan, Matthew Marshall, Andrew Weber, National Park Service Staff · First published 2013Open the Tome
Level I Water Quality Inventory and Aquatic Biological Assessment of the Allegheny Portage Railroad National Historic Site and the Johnstown Flood National MemorialScott Sheeder, Caleb Tzilkowski, National Park Service Staff · First published 2013Open the Tome
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 RiverCaleb Tzilkowski, Andrew Weber, Kristina Callahan, Matthew Marshall, National Park Service Staff · First published 2013Open the Tome
Wadeable Stream Monitoring in the Eastern Rivers and Mountains Network 2009?2010 Summary ReportCaleb Tzilkowski · First published 2013Open the Tome
