Operum
By: Francisci Petrarchae
Contributors: Herold, Johannes, 1514-1567
Publisher: Gregg Press
Published: 1965
Place of publication: Ridgewood, N. J
Language: lat; ita
Number of pages: 1375
Notes: Reprint of the fourth edition of the collected works, Basiliae, 1554, and the first to contain the Italian verse (in t. 4).

Edited by J. Herold with a life of Petrarch by G. Squarciafico.