Precambrian geology, Gravenhurst area / by S.B. Lumbers, V.M. Vertolli and W.M. Schwerdtner.
Contributors: Vertolli, V.M.; Schwerdtner, W.M.
Series: Ontario.  Geological Survey.  Map P3409
Publisher: Ministry of Northern Development and Mines
Place of publication: Sudbury
Language: eng
Number of pages: 50
Subjects: Geology - Ontario - Gravenhurst area; Geology - Ontario - Morrison Township.; Geology -  Ontario - Muskoka Township; Geology  - Ontario - Draper Township; Geology - Ontario - Ryde Township; Geology - Ontario - Dalton Township; Geology - Ontario - Longford Township (west)
Notes: 11