First vertical derivative of magnetic field with Keating coefficients map Ontario : Nicholson : NTS 41 O/13.
Series: Ontario. Geological Survey. Map 81 702; Canada. Geological Survey. Open file 4059
Publisher: Ministry of Northern Development & Mines; Geological Survey of Canada
Place of publication: Sudbury; Ottawa
Language: eng
Number of pages: 50
Subjects: Geology - Ontario - Nicholson; NTS 41 O/13
Notes: 11