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	1.	No cover image available Appropriability Research and Development spending and technological performance by Levin, Richard C Material type: Text; Format: print ; Literary form: Not fiction Publication details: 1988 Other title: J7052 Availability: Items available for loan: (1). Place hold Add to cart (remove)
	2.	No cover image available Research and Development(R&D) appropriability opportunity market structure:New evidence on some schumpeterian hypotheses by Levin, Richard C et al Material type: Text; Format: print ; Literary form: Not fiction Publication details: 1985 Other title: J7051 Availability: Items available for loan: (1). Place hold Add to cart (remove)
	3.	No cover image available New Look at the patent system by Levin, Richard C Material type: Text; Format: print ; Literary form: Not fiction Publication details: 1986 Other title: J2323 Availability: Items available for loan: (1). Place hold Add to cart (remove)
	4.	No cover image available Railroad regulation deregulation and workable competition by Levin, Richard C Material type: Text; Format: print ; Literary form: Not fiction Publication details: 1981 Other title: Availability: Items available for loan: (1). Place hold Add to cart (remove)

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