TY  - BOOK
AU  - Cole,Lionel Heber
ED  - Canada.
TI  - Silica in Canada: its occurrence, exploitation and uses,
AV  - TN948.S6 C3 1923
PY  - 1923///-28
CY  - Ottawa
PB  - Government Printing Bureau
KW  - Silica
N1  - At head of title, pt. I-II: Canada. Department of Mines. Hon. Charles Stewart, minister; Charles Camsell, deputy minister. Mines branch, John McLeish, director; Seven folded maps in pocket of pt. I; No. 555, 686; pt. I. Eastern Canada.--pt. II. Western Canada
ER  -