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101 0 $aENG
200 1 $aActivity Networks$eProject Planning and Control by Network Models$fSalah E. Elmaghraby.
210   $aNew York$cJohn Wiley$d1977.
215   $axvii, 443 p.$d24 cm
610 0 $aEconomia, Econometria
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700  1$aElmaghraby,$bSalah E.$057369
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