41 educational services, namely, conducting classes in the use of publicity, business management, secretarial services and typing, accounting, and computer services; education in the field of publicity, business management, secretarial services and typing, accounting, and computer services, rendered by correspondence courses; vocational education in the field of publicity, business management, secretarial services and typing, accounting, and computer services; arranging and conducting educational conferences and seminars in the field of publicity, business management, secretarial services and typing, accounting, and computer services; rental of video tapes, of sound recordings, of video cassette recorders, of radios and of television sets