@book {7249,
	title = {Underfoot : A Geologic Guide to the Appalachian Trail},
	year = {1993},
	note = {Illustrations, Maps},
	publisher = {Appalachian Trail Conference},
	organization = {Appalachian Trail Conference},
	edition = {2nd ed.},
	address = {Harpers Ferry, WV},
	keywords = {Appalachian Trail, Geology, Guidebooks},
	author = {Chew, V. Collins}
}
