000 00310nam a2200133Ia 4500
008 161121s9999 xx 000 0 und d
100 _aMc KOWN. H. C ; ROBERTS. A. B
245 0 _aAudio visual aids to instruction
260 _cMc Graw Hill
365 _b0
650 _aNIL
652 _a#N/A
942 _cBK
999 _c33839
_d33839