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008 160710s1993 xx 000 0 und d
082 _a510 GUP
100 _aGUPTA,B.D.
245 _aMATHEMATICAL PHYSICS
260 _bVIKAS PUB. HOUSE PVT LTD.
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300 _a15.149
942 _2ddc
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999 _c70741
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