Hello,
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You can't have a free download of S.S guide books or e-books for reference.
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The Only option you have is you should buy it.
You can buy it from store or even order the book online.
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There are many other best books you can download it for free for your preparation. If you want to have a look or want to download them refer the below provided link
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https://law.careers360.com/download/ebooks
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Hope this helps you.
Thank you