Rationalizers are important to the Polish technical industry. The ‘White Tracks’ film is shot in Spitsbergen and in the Tatra Mountains. It is directed by Jaroslaw Brzozowski and Andrzej Wrobel. Starring Emil Karewicz and Leon Niemczyk. Jokes on the occasion of April Fools' Day: Beata Tyszkiewicz and Bogumil Kobiela are getting married, American wrestlers will visit Poland, and Sante Vannini, an eccentric pianist, will play the piano with his toes in Warsaw.