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101 0 $aeng
102   $aGB
200 1 $a<<An>> introduction to maximum principles and symmetry in elliptic problems$fL. E. Fraenkel
210   $aCambridge$cUniversity Press$dcopyr. 2000
215   $aX, 340 p.$cill.$d23 cm
225  2$aCambridge tracts in mathematics$v128
410  1$10010022730$12001$aCambridge tracts in mathematics$v128
606  0$aOperatori ellittici
606  0$aSimmetria
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700  1$aFraenkel,$bL. E.$065755
801   $aIT$bsalbc$gISBD
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979   $aRSIAV6$b90$c20091111$lUSA01$h1449
996   $aIntroduction to maximum principles and symmetry in elliptic problems$9378165
997   $aUNISA