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100   $a20001205d1970----km-y0itay50------ba
101 1 $aeng$crum
102   $aDE
105   $ay-------001yy
200 1 $aBest approximation in normed linear spaces by elements of linear subspaces$fby Ivan Singer
210   $aBerlin$cSpringer-Verlag$d1970
215   $a415 p.$d24 cm
225 1 $a<<Die >>Grundlehren der mathematischen Wissenschaften$v171
454  0$12001$aCea mai bunà aproximare in spatii vectoriale normate prin elemente din subspatii vectoriale$934996
610 0 $aApprossimazioni
676   $a515.7
700  1$aSinger,$bIvan$0334747
801  0$aIT$bUNINA$gRICA$2UNIMARC
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952   $a02 22 D 6$b1274$fFINBN
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959   $aDINAE
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996   $aCea mai buna aproximare în spatii vectoriale normate prin elemente din subspatii vectoriale$934996
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