000 00293nam a2200133Ia 4500
008 161121s9999 xx 000 0 und d
100 _aIQBAL (MA) ETC
245 0 _aControl of noise in ventilation systems
260 _cNIL
365 _b0
650 _aNIL
652 _a#N/A
942 _cBK
999 _c54292
_d54292