TY  - BOOK
AU  -  Albert,Bouchard
ED  -  Mineral Developemnt Sector. Dept. of Energy, Mines and Resources.
TI  -  Columbium (Niobium) and tantalum / 
PY  - 1975///
CY  -  Ottawa : 
PB  -  Dept. of Energy, Mines and Resources, 
KW  -  Niobium ores
KW  -  Canada
KW  -  Tantalum
ER  -