영문목차
I. Introduction=83,87,2
II. Previous Studies=84,88,3
III. Experiment=87,91,1
1. Purpose=87,91,1
2. Method=87,91,2
3. Results=88,92,3
IV. Discussion=90,94,4
V. Conclusion=94,98,1
References=94,98,3
ABSTRACT=96,100,1