In 1930, the first Polish talkies premiered, using sound-on-disc systems: "Moralność pani Dulskiej" ("The Morality of Mrs. Dulska") in March and the all-talking "Niebezpieczny romans" ("Dangerous Love Affair") in October. In Italy, whose once vibrant film industry had become moribund by the late 1920s, the first talkie, "La Canzone dell'amore" ("The Song of Love"), also came out in October; within two years, Italian cinema would be enjoying a revival. The first movie spoken in Czech debuted in 1930 as well, "Tonka Šibenice" ("Tonka of the Gallows"). Several European nations with minor positions in the field also produced their first talking pictures—Belgium (in French), Denmark, Greece, and Romania. The Soviet Union's robust film industry came out with its first sound features in December 1930: Dziga Vertov's nonfiction "Enthusiasm" had an experimental, dialogueless soundtrack; Abram Room's documentary "Plan velikikh rabot" ("The Plan of the Great Works") had music and spoken voiceovers. Both were made with locally developed sound-on-film systems, two of the two hundred or so movie sound systems then available somewhere in the world. In June 1931, the Nikolai Ekk drama "Putevka v zhizn" ("The Road to Life" or "A Start in Life"), premiered as the Soviet Union's first true talking picture.