Search alternatives:
orogen » orogeny, drogen, orogenic

1
by Mitchem, Pamela Price
Published 2018
...The Appalachian region of the United States is unique and diverse; and over the years...

2
by Fink, Paul M.
Published 1974
Appalachian State University
..., and Welsh settled the region, therefore many of the pronunciations are reminiscent of Celtic languages...