Mineral deposits of Central America /
Roberts, Ralph Jackson,1911-
Irving, Earl M.(Earl Montgomery),1911-
Washington, [D.C.] : U.S. G.P.O.,
1957.
"Prepared under the auspices of the International Cooperation Administration, U.S. Dept. of State."
Includes index.
Bibliography: p. 195-198.
Mines and mineral resources