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Lua i Stíl Chicago (17ú heag.)Concepcion, Madeline G., Gabriel A. Leopando, Joseph Mercado, Bernadeth G. Nobles, Frederick O. Ramos, agus Imelda V. Valmocina. Operations Research. 2006 edition. [Place of publication not identified]: [publisher not identified], 2006.
Lua MLA (9ú heag.)Concepcion, Madeline G., et al. Operations Research. 2006 edition. [publisher not identified], 2006.
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