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100 1 _aOppenheim, Charles
245 0 0 _aThe effect of recycling a patent citation network
650 _aPatentwesen
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650 _aDokumentation
_9829
650 _aInformation
_92006
773 0 _aWPI. 2(1980),3,100-102.
_wz_WPI
999 _c10045
_d10045