DENNIS SCHROEDER / NREL / US DEPARTMENT OF ENERGY / SCIENCE PHOTO LIBRARY DENNIS SCHROEDER / NREL / US DEPARTMENT OF ENERGY / SCIENCE PHOTO LIBRARY
Biofuel education. Assortment of biomass feedstock, used for a lesson in renewable energy during an educational program at the National Renewable Energy Laboratory's (NREL) Visitor Center, Colorado, USA.
Model release not required. Property release not required.