Geological guide book of the western excursion : with daily itineraries and map of the route : prepared for the use of members of the Congress who take part in the excursion : Washington, D.C., August, 1891 / 5th International Congress of geologists .— : Gibson Bros. — 171 с. — Lang: eng .— URL: https://rucont.ru/efd/126724 (дата обращения: 01.07.2024)