Though thermodynamics is a tool used in all sciences and technologies, this book is especially designed to acquaint science students with the whole breadth of the subject covering both equilibrium and non-equilibrium regions. Equilibrium thermodynamics covered in the first-seven chapters caters to the needs of students up to the B.Sc./B.Sc. (Hons.) level. The next three chapters devoted to non-equilibrium thermodynamics and network thermodynamics fulfill the needs of the syllabi on these topics introduced in most universities at the postgraduate level. Chapters on