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101 0 $aeng
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200 1 $a<<An>> introduction to nonlinear boundary value problems$fStephen R. Bernfeld, V. Lakshmikantham
210   $aNew York$bAcademic Press$d1974
215   $aXI, 386 p.$bill.$d24 cm
225  2$aMathematics in science and engineering$v109
410 1 $1001000333593$12001$aMathematics in science and engineering$v109
606  0$aMatematica
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700  1$aBERNFELD,$bStephen R.$040764
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996   $aIntroduction to nonlinear boundary value problems$91511915
997   $aUNISA