Title: Precambrian geology, Elmvale area.  by S.B. Lumbers and V.M. Vertolli
Subjects: Geology - Ontario - Medonte Twp, Geology - Ontario - Tiny Twp, Geology - Ontario - Flos Twp, Geology - Ontario - Tay Twp, Geology - Ontario - Elmvale area, Geology - Ontario - Oro Twp