Köln, Universitäts- und Stadtbibliothek, GB IV 9178
From Clavis Canonum
Köln, Universitäts- und Stadtbibliothek, GB IV 9178 is a fragment (two double leaves) of a ninth-century copy of Cresconius' Concordia canonum. Zechiel-Eckes, Cresconius maculatus, p. 109 assumed it was written in the second half of the ninth century in Eastern France.
