Não informado. (1956). Geographical Paper. Department of Mines and Technical Surveys, Geographical Branch.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Geographical Paper. Ottawa: Department of Mines and Technical Surveys, Geographical Branch, 1956.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Geographical Paper. Department of Mines and Technical Surveys, Geographical Branch, 1956.
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