s-space.snu.ac.krs-space.snu.ac.kr/bitstream/10371/83573/1/교통... · 178 Al 70 Journal of Korean...
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s-space.snu.ac.krs-space.snu.ac.kr/bitstream/10371/83573/1/교통... · 178 Al 70 Journal of Korean Society of Transportation Vol.20 No.4, August, 2002 01£1-01 70- 01 -+70011 0 C5L