His most popular work remains "Il mulino del Po" ("The Mill on the Po") (1938–1940), which covered a century in the life of a rural family. A film adapted from the novel was released in 1949. Later novels, published from 1945 to 1978, include: "Il pianto del figlio di Lais, Non ti chiamerò più padre, La cometa", "Il rapporto segreto" ("The secret relationship"), "Afrodite: un romanzo d'amore" ("Aphrodite: a love novel"), "Il progresso è un razzo" ("Progress is a rocket") and "Il sommergibile" ("The submarine").