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1. Technical Subjects Covered By Former Uspc Cross-Reference Art Collections [xracs] And Digests  (2,211)
2. General Tagging Of Cross-Sectional Technologies Spanning Over Several Sections Of The Ipc  (2,211)
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6. Technologies Or Applications For Mitigation Or Adaptation Againstclimate Change  (1,087)
7. Technical Subjects Covered By Former Uspc Cross-Reference Artcollections [xracs] And Digests  (790)
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