Ries, Heinrich, 1871-1951.
Elementary economic geology / by H. Ries. - New York : John Wiley, 1930. - vii, 360 p. : ill. ; 22 cm.
Includes index.
"Selected list of works of a general character": p. 343-344; bibliographical foot-notes.
31003481
Geology, Economic.
Mines and mineral resources.
TN260 / .R45
553 / RIE
Elementary economic geology / by H. Ries. - New York : John Wiley, 1930. - vii, 360 p. : ill. ; 22 cm.
Includes index.
"Selected list of works of a general character": p. 343-344; bibliographical foot-notes.
31003481
Geology, Economic.
Mines and mineral resources.
TN260 / .R45
553 / RIE