000 00403 a2200133 4500
080 _a371.33
_bW 832 A
245 1 _aAudio visual materials
_bTheir nature and use
_cby W.A. Wittich and C.F. Schuller
250 _a3rd edn.
260 _aNew York
_bHarper & Row Publishers
_c1962
650 _aAudio Visual Aids
100 1 _aWittich, W.A., Schuller, C.F.
_d
300 _a500 p. & 14 plates
901 _a81268
999 _c23422
_d23422