First and second annual report of progress by the state geologist and the assistant and chemist on the Geological survey of the state of Iowa (1868)
Iowa Geological Survey White, Charles A. (Charles Abiathar), 1826-1910 Hinrichs, Gustavus Detlef, 1836-1923 St. John, Orestes Henry
бумажная книга
Воспроизведено в оригинальной авторской орфографии издания 1868 года (издательство "Des Moines, F. W. Palmer, State Printer").