4 treff

Instructional technology : its nature and use
Wittich, Walter Arno
Bok Engelsk 1973
Audiovisual materials : their nature and use
Walter Arno Wittich, Charles Francis Schu...
Bok Språk ikke angitt 1967
Audiovisual materials : their nature and use
by Walter Arno Wittich and Charles Franci...
Bok Engelsk 1962
Audio-visual materials : their nature and use
by Walter Arno Wittich and Charles Franci...
Bok Engelsk 1953