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Multilingual
1
Leonard, George, 846-L581w | Hopewell | 1988 846-L581w,
2
3
Strauss , George, 325.3-S912p-안진홍 | Prentice-Hall | 1980 325.3-S912p-안진홍,
4
Pronko, Leonard C., 680-P965e | The Macmillan Press | 1982 680-P965e,