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What is known, what is not known, and what is it necessary to know for informed choices about defence R&D? The published data on government‐funded defence R&D are reviewed and assessed. Time‐series and cross‐section data are presented for the world's leading defence R&D nations. World defence R&D spending is estimated at almost $68 billion in 2001. Gaps in the data are identified and proposals are made for international comparisons of final outputs allowing an assessment of the relative efficiencies of national defence R&D programmes.
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Keywords: Beneficial externalities; Data tables; Defence R&D; Relative efficiencies

Document Type: Research Article

Affiliations: Centre for Defence Economics, University of York, York, YO 10 5DD, UK

Publication date: 01 June 2006

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