P-Cug (Coimbra) Biblioteca Geral da Universidade MM 070
This is a cantus partbook from an original set of five. None of the other partbooks have yet been located. Both sides of the front flyleaf have a 'tabula' arranged alphabetically by incipit.
REES, Owen (1995), Polyphony in Portugal c. 1530 – c. 1620. Sources from the Monastery of Santa Cruz, Coimbra, New York & London: Garland, pp. 297-299.