1920
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http://catalogue.bnf.fr/ark:/12148/cb406551915
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Senécal Clovis Omer (1863-1939). Auteur du texte et al., « Canada. Department of Mines... Monitor (Townships 30 to 40, Ranges 1 to 5, West of Fourth Meridian ; Townships 30 to 40, Ranges 27 to 29, West of Third Meridian), Alberta and Saskatchewan. Scale 1 : 190 080 / C.O. Sénécal, Geographer and Chief Draughtsman ; A.F. Clark and A. Joanes, Draughtsman ; Topography, W.A. Boyd, ... », Cartes et plans de Gallica