Fluorspar,
Allen, Milton Arthur, 1890- .
Fluorspar, by M. A. Allen and G. M. Butler. Published by the University of Arizona, Arizona Bureau of mines. - Tucson, Ariz., 1921. - 19 p. 23 cm. - [Arizona. State bureau of mines] Bulletin no. 114. Mineral technology series, no. 25 .
At head of title: ... University of Arizona bulletin. Cover title.
"Selected bibliography": p. 18-19.
gs 21000322
Fluorspar.
TN948.F6 / A4
402(274)Ar4
MN 1.3:B 85/114
Fluorspar, by M. A. Allen and G. M. Butler. Published by the University of Arizona, Arizona Bureau of mines. - Tucson, Ariz., 1921. - 19 p. 23 cm. - [Arizona. State bureau of mines] Bulletin no. 114. Mineral technology series, no. 25 .
At head of title: ... University of Arizona bulletin. Cover title.
"Selected bibliography": p. 18-19.
gs 21000322
Fluorspar.
TN948.F6 / A4
402(274)Ar4
MN 1.3:B 85/114