The National Academies – National Academy of Sciences, National Academy of Engineering, Institute of Medicine, and National Research Council -starting June 2nd 2011, permit the free download of PDFs of reports that are currently for sale on the National Academies Press (NAP) website. PDFs associated with future reports (except for those in the “Nutrient Requirements of Domestic Animals” series) will also be offered free of charge to all Web visitors.
That’s more than 4,000 reports to date on a range of scientific topics.