Travelogue of Konrad Keilhack (1858–1944), Geologist from Berlin, attending the International Geological Congress 1897 in St. Petersburg (Russia)
Crossref DOI link: https://doi.org/10.1007/s00531-015-1216-9
Published Online: 2015-07-01
Published Print: 2015-09
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Pfaffl, Fritz A.
Dullo, Wolf-Christian
Text and Data Mining valid from 2015-07-01