TY - BOOK ID - 142816481 TI - A-V instruction : materials and methods PY - 1959 PB - New York, : McGraw-Hill, DB - UniCat KW - Audio-visual education. KW - Enseignement KW - Educacao. KW - Méthodes audiovisuelles. UR - https://www.unicat.be/uniCat?func=search&query=sysid:142816481 AB - ER -