The conduct of amusement centres, the conduct of radio programmes for leisure, amusement parks, amusement services, race tracks, horse and other animal training, arrangements for foot-and horse-race meetings and other contests and meetings, entertainment including radio and television entertainment, occupation of leisure time, publication and delivery of books, magazines, news sheets and programmes dealing with race meetings, production of radio and television programmes particularly those dealing with horse and other race meetings, impresario services