Frome the University of North Carolina at Pembroke. The goals of the Biofuels Project are to enrich the life of the region, state, and nation through the three areas of Research, Education, and Economic Development.
This is one of the best introduction to biodiesel pubs I've seen yet. It was produced by ATTRA—National Sustainable Agriculture Information Service, in 2009. Their previous document featured blender biodiesel, this one features the Dr. Pepper method.