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Lua i Stíl Chicago (17ú heag.)HOEL P G. FINITE MATHEMATICS AND CALCULUS WITH APPLICATIION OF BUSINESS. NEW YORK: JOHN WILEY AND SONS, 1974.
Lua MLA (9ú heag.)HOEL P G. FINITE MATHEMATICS AND CALCULUS WITH APPLICATIION OF BUSINESS. JOHN WILEY AND SONS, 1974.
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