ISBN 9781492170235 books & textbook
Vegetation Classification and Mapping at Allegheny Portage Railroad National Historic Site
Perles, Stephanie J. Podniesinski, Gregory S. Zimmerman, Ephraim Eastman, Elizabeth Sneddon, Lesley A. National Park Service
CreateSpace Independent Publishing Platform /2013-08-28 Paperback / 196 Pages
isbn-10: 1492170232 / isbn-13: 9781492170235
