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http://etd.npue.edu.tw/ETD-db/ETD-search-c/getfile?URN=etd-0501107-162444-81&filename=etd-0501107-162444-81.pdf
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http://140.127.82.35/ETD-db/ETD-search/getfile?URN=etd-0501107-162446-448&filename=etd-0501107-162446-448.pdf
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http://140.127.82.166/bitstream/987654321/18462/1/104NPTU0328016-001.pdf
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