1915
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Senécal Clovis Omer (1863-1939). Auteur du texte et al., « Canada. Department of Mines... Geological Plan of the Principal Mines of Rossland, B.C., with accompanying Sections. 200 Metres [=Om. 083 ; 1 : 24 000 ]. C.O. Sénécal Geographer and Chief Draughtsman ; S.G. Alexander, Draughtsman. Stereograms and Geology by C.W. Drysdale », Cartes et plans de Gallica