Photo de stock - George Douglas holding a handful of corn stover at the National Renewable Energy Laboratory, operated by the US Department of Energy, where scientists are developing economical processes for making cellulosic ethanol from non-edible plants, Golden, Colorado, USA

Photo de stock: George Douglas holding a handful of corn stover at the National Renewable Energy Laboratory, operated by the US Department of Energy.

Mots-clés utilisés

Choisir des mots clés multiples