%0 Journal Article %T A Study on the Effects of Drilling in Tympanomastoid Surgery %J International Journal of Pharmaceutical Research and Allied Sciences %@ 2277-3657 %D 2016 %V 5 %N 2 %P 175-178 %U https://ijpras.com/article/a-study-on-the-effects-of-drilling-in-tympanomastoid-surgery