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xvii, 525 p. , Includes index. 26 cm..
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Columbus, Ohio Grid Pub. 1980 .
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By Litka, Michael P..
Columbus, Ohio South Western College Publishing 1995 .
xii, 264 p. , Includes index. 0538844922

By Litka, Michael P..
Boston PWS-Kent Pub. 1991 .
x, 140 p. 24 cm..
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