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R2486-01 - POSITION-SENSITIVE PHOTOMULTIPLIER TUBES WITH CROSSED WIRE ANODES
R2486-03 - POSITION-SENSITIVE PHOTOMULTIPLIER TUBES WITH CROSSED WIRE ANODES
R2486-02 - POSITION-SENSITIVE PHOTOMULTIPLIER TUBES WITH CROSSED WIRE ANODES
R2486-04 - POSITION-SENSITIVE PHOTOMULTIPLIER TUBES WITH CROSSED WIRE ANODES