A Summa is an organized account of a topic, containing all the knowledge of the author about that topic. The plural of summa is summae. See Ars Magica Fifth Edition, page 165 for rules concerning summae.
Below is a list of all the summae found on the Ars Magica Wiki.
This category has the following 2 subcategories, out of 2 total.
Pages in category "Summae"
The following 18 pages are in this category, out of 18 total.