TY  - BOOK
AU  - Harder,Edmund Cecil
TI  - Manganese deposits of the United States with sections on foreign deposits, chemistry, and uses,
T2  - U.S. Gelogical survey. Bulletin
AV  - TN490.M3 H3
PY  - 1910///
CY  - Washington
PB  - Govt. print. off.
KW  - Manganese
N1  - Bibliography: p. 284-288
ER  -