Hayden, F.V. Ninth annual report of the United States : Geological and geographical survey of the territories embracing Colorado and parts of adjacent territories being a report of progress of the exploration for the year 1875 / By F.V. Hayden , conducted under the authority of the secretary of the interior; F.V. Hayden .— : Government printing office, 1877 .— 995 с. — Lang: eng .— URL: https://rucont.ru/efd/116964 (дата обращения: 06.11.2025)