The fourth issue of Acta Botanica Weberi – Bibliography of the Botanical Lifework of William Alfred Weber (1918–2020) – is now available to download.
![Acta Botanica Weberi No. 4 March 2021](http://williamaweber.com/wp-content/uploads/2021/03/Acta-Botanica-Weberi-No-4-March-2021_sm.jpg)
The fourth issue of Acta Botanica Weberi – Bibliography of the Botanical Lifework of William Alfred Weber (1918–2020) – is now available to download.