@book{29165,
	author = {Roberts, Ralph Jackson, and Irving, Earl M.},
	title = {Mineral deposits of Central America /},
	publisher = {U.S. G.P.O.,},
	year = {1957.},
	address = {Washington, [D.C.] :},
	note = {"Prepared under the auspices of the International Cooperation Administration, U.S. Dept. of State."}
}