(2013). Environmental impact of linguistic sound (Hijaz and Najd a model). , 1(207), 167-180.
. " Environmental impact of linguistic sound (Hijaz and Najd a model)". , 1, 207, 2013, 167-180.
(2013). ' Environmental impact of linguistic sound (Hijaz and Najd a model)', , 1(207), pp. 167-180.
Environmental impact of linguistic sound (Hijaz and Najd a model). , 2013; 1(207): 167-180.


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