Lin, H.L.H.L.LinHue, C.W.C.W.HueLin, J.Y.J.Y.LinHsu, N.W.N.W.Hsu2010-09-202018-06-282010-09-202018-06-282003-11http://ntur.lib.ntu.edu.tw//handle/246246/203786en-USA research on authenticity of English teaching materials: Word frequency analysis on official Taiwan high school English textbooks and frequently used 1000 2000 words with Cobuild corpus.