1 "Fișier:The_American_journal_of_science._(IA_mobot31753002152731).pdf".

Fișier:The American journal of science. (IA mobot31753002152731).pdf

Internet Archive ID: mobot31753002152731 described at URL: https://archive.org/download/mobot31753002152731/mobot31753002152731.pdf determination method...