@book{29615,
	author = {Welby, Charles W.},
	title = {Bedrock geology of the central Champlain Valley of Vermont,},
	publisher = {Vermont Development Dept.,},
	year = {1961.},
	series = {Vermont. Geological Survey. Bulletin,},
	address = {Montpelier,},
	note = {Part of illustrative matter in pocket.}
}