jgs2021-037_si_003.docx (44.33 kB)
Helmersen 1872–Russian. The naming of the Permian System
journal contribution
posted on 2021-05-13, 14:26 authored by Michael J. Benton, Andrey G. SennikovOriginal text from Helmersen, G.P. 1872. Sir Roderick Impey Murchison: [Obituary]. Gorniy Zhurnal, 1872(2), 340–352. (In Russian).