TY  - BOOK
AU  -  Vagt,G.O.
ED  -  Mineral Development Sector. 
TI  -  Barite and Celestite / 
PY  - 1977///
CY  -  Ottawa : 
PB  -  Dept. of Energy, Mines and Resources, 
KW  -  Barite
KW  -  Canada
KW  -  Celestite
ER  -