Lettere 1936 - 1968 - Capitini, Aldo 1899-1968; Calogero, Guido 1904-1986 (Carocci, 2009)
Introd., bibl. refs., notes, name index. - At head of title: Fondazione ... - Letters publ. for the first time between A. Capitini, philosopher and proponent of non-violence, and G. Calogero (1904-1986), philosopher and politician