نبذة مختصرة : 1 map : col. ; 45 x 31 cm. or smaller. Relief shown by contours and spot heights. Title supplied by cataloger. Set includes various editions. "Surveyed in 1897 and 1899". "Contour interval 100 feet. Datum is mean sea level." Scale 1:125,000 ; Polyconic proj. (W 120°30--W 120°00/N 48°30--N 48°00)
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