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~language:"nld"
~subject:"Patent"
~subject:"World"
~type_genre:"Graue Literatur"
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Tracing technological developments : an exercise in bibliometric cartography and patent citation analysis
Noyons, Ed
;
Engelsman, E. C.
;
Raan, A. F. J. van
-
1991
Persistent link: https://www.econbiz.de/10000853083
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