Frnds i know many of the jntu prescribed text books r available in google book search but they wont allow us to download them....but with this simple trick u can download ur desired text book from books.google.com....
just use GOOGLE BOOK DOWNLOADER to download ur desired textbook in pdf format its a wonderful tool for us... 
VERY MUCH BENEFICIAL TO JNTU STUDENTS-teza
DOWNLOAD LINK IS
http://download.softpedia.com/dl/fe088499226c592948270b739778d3b4/493d6ebf/100112996/software/internet/download_manager/GoogleBookDownloader-0.1.0.alpha2.zip
NOTE: U SHOULD INSTALL .NET2.0 THEN ONLY IT WORKS....
Posted in: DOWNLOAD TEXT BOOKS
