Annual report of the Ontario Department of Mines.
Ontario.Department of Mines.
Toronto : The Department,
1922-1969.
Reports for 68th (1958)-69th (1959) issued without title.
Cover title.
Title varies slightly.
Pts. and vols. have distinctive titles.
Vol. 26-35 (1917-27 (i.e. 1926)), 1 v.; v. 36-49 (1927-40), 1 v.; v. 50-59 (1941-50), 1 v.; v. 60-64 (1951-55), 1 v.; v. 65-69 (1956-60), 1 v.
Geological reports, formerly published as numbered parts, began separate publication with no. 1 (1960).
Ontario. Department of Mines
Mines and mineral resources
Annual report of the Bureau of Mines,

Annual report on mining operations in Ontario during calendar year ...
Annual report of the Ontario Fuel Board