LEADER 00471cac0 22001811  450 
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005 20110502131807.0
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801  0$aIT$bUNISOB$c20110502$gRICA
912   $aLAEC00029123
940   $aC 121 Collana SBN
941   $aC
996   $aEsercizi$9220076
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998 \\$1001E600200069415$12001 $aPortoghese$eesercizi$econ tutte le soluzioni