000			00357nam a2200157Ia 4500
008			160615s9999 xx 000 0 und d
100			_aPOTTER (Ralph K) et al
245			_aVisible speech
260			_aNew York
260			_bD. Van Nostrand Co.
260			_c1947
300			_axvi p. + 441
942			_cBooks
999			_c3697 _d3697