Dòng Nội dung
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3
Emu campus copy center / University of Oregon
University of Oregon, 1992
775 p ; 20 cm.



4
Language, education and culture / Tariq Rahman.
[Islamabad] : Sustainable Development Policy Institute ; 1999
xvi, 318 p. ; 22 cm.



5
Principles of linguistic change. William Labov Vol. 2, Social factors /
Oxford : Blackwell, 2001
xviii, 572 p. : ill., maps; 24 cm.