El-Aidy , Mahmoud Youness .
Subjective and objective measurements of sound attenuation by ear protectors of circumaural type . [Thesis /] قياسات موضوعية وشخصية عن خفض الضوضاء بواسطة واقية السمع حول الاذنية . Mahmoud Youness El-Aidy . - 1993. - 86 p : ill ; 29 cm.
includes summary in arabic.
Thesis (M.S ) -- Cairo University, 1993.
includes bibliogrphic referance (77-86).
All age.
530.81
/ ES
Subjective and objective measurements of sound attenuation by ear protectors of circumaural type . [Thesis /] قياسات موضوعية وشخصية عن خفض الضوضاء بواسطة واقية السمع حول الاذنية . Mahmoud Youness El-Aidy . - 1993. - 86 p : ill ; 29 cm.
includes summary in arabic.
Thesis (M.S ) -- Cairo University, 1993.
includes bibliogrphic referance (77-86).
All age.
530.81
/ ES