TY  - BOOK
AU  - Fleischer,Michael
TI  - Geochemical association of niobium (columbium) and titanium and its geological and economic significance,
AV  - QE75 .C5 no. 225
U1  - 553.49 
PY  - 1952///
CY  - Washington
KW  - Niobium
KW  - Titanium
N1  - Erratum slip inserted; "Literature cited": p. 9-10
ER  -