Hygrometer Observations at the Soulina mouth of the Danube during the year of 1876 - NARA - 122668630.jpg
en
Hygrometer Observations at the Soulina mouth of the Danube during the year of 1876 NARA 122668630, US National Archives series: Civil Works Map File, Images from the National Archives and Records Administration, US National Archives location: other, Hygrometer Observations at the Soulina mouth of the Danube during the year of 1876
commons
ja
1876年のドナウ川のスリナ川の河口での湿度計 、米国国立公文書館シリーズ:土木工事マップファイル、米国国立公文書記録管理局の画像、米国国立公文書館の場所:1876年のスリナ川の河口での湿度計観測
commons_translated
hygrometer hygroscope psychrometer cat mouth