na INLIS000000001120429 20230627120114 0010-0623000011 ta 230627 0 eng 749415193 371.35 371.371.35 RUM o Rumble, Greville Cost And Economics Of Open and Distance Learning Series Edisi 1 London : Kogan Page Limited, 1997 x , 224 Halaman : Ilustrasi ; 24 cm Pendidikan Jarak Jauh Pembelajaran Terbuka dan Jarak Jauh Distance Education Open and Distance Learning 99/00564