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Report of Audio-visual Education Administrative Workshop, Held at San Diego State College by the California State Department of Education in Co-operation with San Diego State College, August 4 Through 15, 1947

出版	Division of Audio-Visual Education, State Department of Education, 1947
URL	http://books.google.com.hk/books?id=dw7InnwNRawC&hl=&source=gbs_api