1 "Fișier:The_American_journal_of_science._(IA_mobot31753002152806).pdf".

Fișier:The American journal of science. (IA mobot31753002152806).pdf

operator: Internet Archive Internet Archive ID: mobot31753002152806 described at URL: https://archive.org/download/mobot31753002152806/mobot31753002152806.pdf...