(1780). A map of America between latitudes 40 and 70 north, and longitudes 45 and 180 west: Exhibiting the principal trading stations of the North West Company. s.n..
Style de citation Chicago (17e éd.)A Map of America Between Latitudes 40 and 70 North, and Longitudes 45 and 180 West: Exhibiting the Principal Trading Stations of the North West Company. [S.l.: s.n., 1780.
Style de citation MLA (8e éd.)A Map of America Between Latitudes 40 and 70 North, and Longitudes 45 and 180 West: Exhibiting the Principal Trading Stations of the North West Company. s.n., 1780.
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