The Nebbiolo reference article from the English Wikipedia on 24-Apr-2004
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Nebbiolo

Nebbiolo

The most important wine grape variety of Italy's Piedmont region.

Through genetic testing Vouillamoz and Schneider at UC Davis recently found Nebbiolo to be related to other Italian grape varieties; Nebbiolo Rosé, Freisa, Negrera, Rossola, Vespolina and Bubbierasco.

Nebbiolo grapes are used to make wines such as Barolo, and Barbaresco.