000 00282nam a2200097Ia 4500
008 201201s9999 xx 000 0 und d
100 _aISI, pub.
245 0 _aINDIAN STANDARD SPECIFICATION FOR METAL AIR DUCTS REVISED
260 _bND, INDIAN STANDARDS INSTITUTION
_c1963
942 _cOB
999 _c16974
_d16974