Integral Transforms By | Goyal And Gupta Pdf Patched

I should start by understanding the context. Integral transforms are a standard topic in mathematics, used in various engineering and physics applications. The book by Goyal and Gupta might be a textbook that's either out of print, has errors people want to correct, or is being distributed unofficially because the official version is hard to get. But distributing or modifying copyrighted materials without permission is a problem. I need to avoid enabling piracy or illegal modifications.