005120000a22001810004500 100 371.33 WIT Schuller, Charles Francis Wittich, Walter Arno Audio visual meterials : their nature and use 3 New York, Harper & Row publishers 1962 495 Exploration series in education Education/ teaching methods/ audio - visual materials/ programmed learning BK 356049 356049 0 0 0 0 KAUCOAV KAUCOAV 2014-05-02 0 371.33 WIT KAU_COAV-4690 2014-05-02 00:00:00 2014-05-02 BK