E
Ephraim Zimmerman
2 works on record
Works
Vegetation Classification and Mapping at Allegheny Portage Railroad National Historic Site
Vegetation Classification and Mapping at Allegheny Portage Railroad National Historic Site
Distribution and Abundance of Nonnative Plant Species at Johnstown Flood National Memorial and Allegheny Portage Railroad National Historic Site
Distribution and Abundance of Nonnative Plant Species at Johnstown Flood National Memorial and Allegheny Portage Railroad National Historic Site