The previous page is sending you to https://orbi.uliege.be/bitstream/2268/209737/1/94%20Emile%20Marchal%20Bull%20Soc%20Roy%20Bota%20B%201921%20V54%202e%20ser%20V4%20p109-139.pdf.

 If you do not want to visit that page, you can return to the previous page.