@book{29721,
	author = {Robinson, G. D. and Barnett, Henry Frank,},
	title = {Geology of the Three Forks quadrangle, Montana.},
	publisher = {U.S. Govt. Print. Off.,},
	year = {1963.},
	address = {Washington,},
	note = {4 pieces of illustrative matter fold. in pocket.}
}