I'm pretty sure that there is no copyright issue for Abramowitz and Stegun. As a work published by the U.S. government, it is in the public domain. Note that there is no copyright notation or claim in the hardbound edition. Even the Dover reprint has no copyright notation. DHB -----Original Message----- Hello, apparently that book is widely distributed now these days. Unfortunately the copy we see in a couple of places is of poor quality. I made one myself a while ago with my own copy that I did cut and pass through the scanner. http://www.lacim.uqam.ca/%7Eplouffe/articles/Abramowitz&Stegun.pdf It is in the PDF format and of course I made the OCR on it. The result is not perfect but it is better than the one we see in other places. ps : I do not think that this is an infrigement of the copyright because the document is available in some place of the net, if ever it is I would remove it and of course the one I give away like this is NOT for sale, it is for research only. Simon Plouffe