€ 30,00
2 volumes. Hardbound. 19 cm (OCT)(Pencil marginalia in Nubes)
Oxford, Clarendon Press, 1985.
a hall 1985
Amsterdam, Hakkert, 1966.
Ldn., MacMillan, 1904.
Lpz./Bln., Tbn., 1927.
Torino, Libreria Editrice Internazionale, 1913 – 1925.