Author
Gilpin, Edwin, 1850-1907
Canada. Dept. of Mines and Technical Surveys
1
Geological Survey of Canada
1
How, Henry, 1828-1879
1
Nova Scotia Department of Mines and Energy
1
Nova Scotia. Department of Mines and Energy
1
Nova Scotia. Dept. of Public Works and Mines
1
Piers, Harry, 1870-1940
1
Weeks, Ludlow Jackson, b. 1899
1