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For decades, RCA was responsible for performing the most important work in developing and refining photomultipliers.
RCA was also largely responsible for the commercialization of photomultiplers.
The company compiled and published an authoritative and very-widely used Photomultiplier Handbook.
RCA made printed copies available for free upon request.
The handbook, which continues to be made available online at no cost by the successors to RCA, is considered to be an essential reference.

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