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100   $a20001205d1999----km-y0itay50------ba
101 0 $aeng
102   $aUS
200 1 $aBoundary value problems and symplectic algebra for ordinary differential and quasi-differential operators$fW. Norrie Everitt, Lawrence Markus
210   $aProvidence (RI)$cAmerican Mathematical Society$dc1999
215   $axii, 187 p.$d26 cm
225 1 $aAmerican Mathematical Society$v61
610 0 $aOperatori differenziali
610 0 $aProblemi al contorno
676   $a515.35
700  1$aEveritt,$bWilliam Norrie$f<1924- >$049501
701  1$aMarkus,$bLawrence$044496
801  0$aIT$bUNINA$gRICA$2UNIMARC
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996   $aBoundary value problems and symplectic algebra for ordinary differential and quasi-differential operators$9374992
997   $aUNINA