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024 _a121886
037 _cTextual
040 _aSDCL
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041 _2eng
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082 _aB316:25, L3
100 _aBoardman J M
_9516548
245 0 _aHomotopy invariant algebraic structures on topological spaces.
260 _c1973
700 _a Vogt R M
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942 _hB316:25, L3
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999 _c850393
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