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Multilingual
1
Northen, Helen, 338.1-N874지 | 학지사 | 2006 338.1-N874지,
2
Northen, Helen, 334.3-N874c-안진홍 | Columbia University Press | 1994 334.3-N874c-안진홍,
3
Roberts, Robert W, 338.13-R646t | Columbia University Press | 1980 338.13-R646t,