2021-09-22から1日間の記事一覧
https://archive.org/details/cosmossketchofph01humbuoft/page/n5/mode/2up Alexander von Humboldt (1849) Cosmos: A Sketch of a Physical Description of the Universe, vol. 1. Translated by E. C. Otté. London: Henry G. Bohn. Introduction pp. 29…