“Our business model has evolved so that it is now financially viable to put this content out to the entire world for free” - Director of Nat. Acad. Press Publi

“Our business model has evolved so that it is now financially viable to put this content out to the entire world for free” - Director of Nat. Acad. Press Publications (DRM-free): - National Academy of Sciences - National Academy of Engineering - Institute of Medicine - National Research Council