Drift-thickness contours, Montreal area, Quebec = : Courbes montrant l'épaisseur des dépôts meubles, région de Montréal, Québec /
Geological Survey of Canada.
Prest, Victor Kent.
Hode Keyser, Joseph.
Ottawa [Ont.] : The Survey,
1961.
Relief shown by contours.
Includes text.
"Parts of 31 H/12 (E) & 31 H/5 (E)."
"Preliminary series."
Geology