Owen, D.D. Report of a geological survey of Wisconsin, Iowa, and Minnesota : and incidentally of a portion of Nebraska territory, made under instructions from the Unites States Treasury Department / by David Dale Owen; D.D. Owen .— : Lippincott Grambo & Co., 1852 .— 890 с. — Lang: eng .— URL: https://rucont.ru/efd/104278 (дата обращения: 18.11.2025)