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St?hl, Ingolf,
| Prentice Hall |
1990
65
Winston, Wayne L.
| PWS-Kent Pub. Co. |
1991
66
Cobb, Stephen,
| Windcrest |
1991
67
Campbell, Mary V.
| Osborne McGraw-Hill |
1992
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| Windcrest/McGraw-Hill |
1992