I think the site uses Google's filetype:pdf filter, tweaked: * ebooks-free: http://ebooks-free-download.com/introduction-to-probability-and-statistics.html htt

I think the site uses Google's filetype:pdf filter, tweaked: * ebooks-free: http://ebooks-free-download.com/introduction-to-probability-and-statistics.html http://ebooks-free-download.com/introduction-to-probability-... * google pdf: http://www.google.com/search?hl=en&safe=off&q=Introduction+To+Probability+And+Statistics+filetype%3Apdf&aq=f&oq=&aqi= http://www.google.com/search?hl=en&safe=off&q=Introd... You can use also MS Academics or CiteSeerX