000			00306nam a2200097Ia 4500
008			200526s9999||||xx |||||||||||||| ||und||
245		0	_aIndian Standard: Method of Measurement of Real Ear Attenuation of Ear Protectors at Threshold
264			_bIndian Standards Institution _c1971
300			_a8p.
942			_c
999			_c11025 _d11025