515.7 KRE 121741 121742 121743 121744 121745 121746 121747 121748
Kreyszig, Erwin Introductory functional analysis with applications / by Erwin Kreyszig. - Canada : John Wiley & Sons, 1978 xiv, 688p. : ill. : 24cm 9780471504597 * Functional analysis
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