Desing and provision of teaching aids and educational equipment on a national scale /
Hakansson, C. S.
Desing and provision of teaching aids and educational equipment on a national scale / by C. S. Hakansson. - París : New York : UNESCO ; UNICEF, 1981. - 10 p. : il. - Notes, comments... ; 87 .
371.64/. 69 (-77)=20 HAK No.87.
Desing and provision of teaching aids and educational equipment on a national scale / by C. S. Hakansson. - París : New York : UNESCO ; UNICEF, 1981. - 10 p. : il. - Notes, comments... ; 87 .
371.64/. 69 (-77)=20 HAK No.87.