Inventions.

Patents, citations, and innovations : a window on the knowledge economy [NT 59711] by: Trajtenberg, Manuel; Jaffe, Adam B. ([NT 1579] Language materials, printed)

Design by use : the everyday metamorphosis of things [NT 59711] by: Stich, Sonja; Wender, Miriam; Brandes, Uta ([NT 1579] Language materials, printed)

Innovation without patents : harnessing the creative spirit in a diverse world [NT 59711] by: Suthersanen, Uma; Chow, Kit Boey; Dutfield, Graham ([NT 1579] Language materials, printed)

Marshall Brain's more how stuff works [NT 59711] by: Brain, Marshall ([NT 1579] Language materials, printed)

The evolution of useful things [NT 59711] by: Petroski, Henry ([NT 1579] Language materials, printed)

Put a fan in your hat ! : inventions, contraptions, and gadgets kids can build [NT 59711] by: Carrow, Robert S.; Brown, Rick ([NT 1579] Language materials, printed)