Yazar
William Egbert Cockfield
4 cilt bulundu.
Cilt sonuçları
Geology and mineral deposits of Nicola map-area, British Columbia
William Egbert Cockfield · E. Cloutier, King's Printer
164 sayfa · 1948
Mines and mineral resources / Geology
Lode gold deposits of Ymir-Nelson area, British Columbia
William Egbert Cockfield · J.O. Patenaude, I.S.O., printer to the King
78 sayfa · 1936
Gold mines and mining