@book{29470,
	author = {Bertholf, William Earl,},
	title = {Magnetite taconite rock in Precambrian formations in Rio Arriba County, New Mexico.},
	publisher = {State Bureau of Mines & Mineral Resources, New Mexico Institute of Mining & Technology,},
	year = {1960.},
	series = {New Mexico. Bureau of Mines and Mineral Resources. Circular,},
	address = {Socorro,},
	note = {Errata slip inserted.}
}