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Submarines and technological innovation 

, In: Intellectual property and entrepreneurship / ed. by Gary D. Libecap
US continuation patenting in software and biotechnology tec... 
Graham, Stuart J. H.. (2004)  - p. 71-101
Exemplar:  Zentrale:Magazin Zs fe 6268-15; Zentrale:Magazin Zs fe 6268-15