Jean Augustin Barral (1819-1884) French agricultural chemist; first to extract nicotine from tobacco leaf. Wood engraving Paris 1884 Stock Photo - Alamy
Jean Augustin Barral] | Gallica
Jean-Augustin Barral - Wikipedia
Jean-Augustin Barral Books | List of books by author Jean-Augustin Barral
Jean-Augustin Barral Books | List of books by author Jean-Augustin Barral
Jean-Augustin Barral - Les irrigations dans le département - Catawiki