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100   $a20001010d--------km-y0itay50------ba
101 0 $aita
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200 1 $aGeometry of reflecting rays and inverse spectral problems$fVesselin M. Petkov and Luchezar N. Stoyanov
210   $aChichester$cJ. Wiley and Sons$d1992.
215   $aVI, 313 p.$d23 cm
225 1 $aInterscience series of texts, monographs, and tracts$v
225 1 $aPure and applied mathematics$ca Wiley
700  1$aPetkov,$bVesselin M.$0246010
702  1$aStoyanov,$bLuchezar N.
801  0$aIT$bUNINA$gRICA$2UNIMARC
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912   $a990006545660403321
952   $aVI E 447$b17061$fFSPBC
959   $aFSPBC
996   $aGeometry of reflecting rays and inverse spectral problems$9619358
997   $aUNINA
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