Patents, Citations & Innovations : a window on the knowledge economy [CD-ROM] /
Trajtenberg, Manuel
Patents, Citations & Innovations : a window on the knowledge economy [CD-ROM] / Manuel Trajtenberg - Massachusetts : The MIT Press, 2002 - 1 แผ่นsd., col.
Technological innovations
Inventions
Patents
Patents, Citations & Innovations : a window on the knowledge economy [CD-ROM] / Manuel Trajtenberg - Massachusetts : The MIT Press, 2002 - 1 แผ่นsd., col.
Technological innovations
Inventions
Patents
