@book{30388,
	author = {Geological Survey (U.S.)},
	title = {Pegmatites and other Precambrian rocks in the southern Black Hills.},
	publisher = {U.S. Govt. Print. Off.,},
	year = {1968]},
	series = {Professional paper},
	address = {[Washington,},
	note = {Published originally as separate chapters A-F.}
}