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1
Worthington, B.,
| Pergamon |
2003
,
2
Williams, Sue Rodwell, 511.13-W727n-안진홍
| Times Mirror/Mosby College Pub. |
1988
511.13-W727n-안진홍,
3
Worthington-Roberts, Bonnie S., 516.53-W934n
| Mosby Year-book,Inc. |
1985
516.53-W934n,