check these links:
*hk8.org/old_web/
*stud.wsi.edu.pl/~webber/czarny/?link=ebooks
*www.thedigitalcore.net/library/ebooks/
*www.intersoftlb.com/Ebook.aspx
*www.eastasp.com/zh-cn/ebooks/index.aspx
*stommel.tamu.edu/~baum/programming.html
*www.flashdance.cx/books/
*lazurus.shacknet.nu:8000/
*www.et.utt.ro/public/Docs/
*www.docs.rinet.ru