A geography of minerals /
Voskuil, Walter H. 1892-
A geography of minerals / Walter H. Voskuil. - Dubuque : W. C. Brown Co., 1969. - ix, 117 p. : maps. ; 23 cm. - The Brown foundations of geography series .
Bibliography: p. 112-114.
Mines and mineral resources.
553 / VOG 1969
A geography of minerals / Walter H. Voskuil. - Dubuque : W. C. Brown Co., 1969. - ix, 117 p. : maps. ; 23 cm. - The Brown foundations of geography series .
Bibliography: p. 112-114.
Mines and mineral resources.
553 / VOG 1969