Google has worked with many major universities such as Stanford, Princeton, the University of Michigan and Oxford University to scan their out-of-print and current books. You will see links directing you to bookstores and libraries where you can borrow it. If Google has determined that a book is out of copyright, or the publisher or rightsholder has given them permission, you'll be able to page through the entire book. If the book is in the public domain, you'll also be able download, save and print a PDF version.

"The National Academies Press (NAP) was created by the National Academies to publish the reports issued by the National Academy of Sciences, the National Academy of Engineering, the Institute of Medicine, and the National Research Council, all operating under a charter granted by the Congress of the United States. NAP publishes over 200 books a year on a wide range of topics in science, engineering, and health, capturing the most authoritative views on important issues in science and health policy. The institutions represented by NAP are unique in that they attract the nation's leading experts in every field to serve on their blue ribbon panels and committees.

Project Gutenberg is the oldest producer of free electronic books (eBooks or e-texts) on the Internet. Our collection of more than 15,000 eBooks was produced by hundreds of volunteers. Most of the Project Gutenberg eBooks are older literary works that are in the public domain in the United States. All may be freely downloaded and read, and redistributed for non-commercial use.