1.
図書 |
[by] S. Bhagavantam and T. Venkatarayudu
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2.
図書 |
by Reese T. Prosser
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3.
図書 |
S.L. Sobolev ; translated from the third Russian edition by E.R. Dawson ; English translation edited by T.A.A. Broadbent
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4.
図書 |
by R. Courant
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5.
図書 |
by R. Courant and D. Hilbert
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6.
図書 |
Harry Hochstadt
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