Hii Dear,

First of all I would suggest you to use other resources rather than online shopping and PDF. Or you can use your college library. From your question its not clear which book you are talking about. I am also an engineerinf student and rather and I suggest you to use R. K. RAJPUT for thermal engineering which you can get from any shopr or online shopping sites like amazon, flipkart, etc.

If you have any other doubt make it clear in comment section given below.

Good luck!!!