![](/img/cover-not-exists.png)
Penetrating the knowledge filter in “rust belt” economies
Zoltan Acs, Lawrence A. Plummer, Ryan SutterVolume:
43
Language:
english
Pages:
24
DOI:
10.1007/s00168-008-0234-y
Date:
December, 2009
File:
PDF, 297 KB
english, 2009