TY - RPRT TI - Eighteenth annual report of the United States Geological Survey to the Secretary of the Interior, 1896-1897: Part IV - Hydrography AU - Arthur Powell Davis AU - Frank Leverett AU - N. H. Darton AU - J.D. Schuyler PY - 1897 DO - 10.3133/ar18_4 UR - https://pubs.usgs.gov/publication/ar18_4 ID - ar18_4 ER -