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200 1 $aMethods of Intermediate Problems for Eigenvalues Theory and Ramifications$fby WEINSTE IN Alexandre and STENGER William
210   $aNew York [etc.]$cAcademic Press$d197 2
225 1 $aMathematics in science and engineering$v89
700  1$aWeinstein,$bAlexander$013640
702  1$aStenger,$bWilliam
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996   $aMethods of Intermediate Problems for Eigenvalues$9118447
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