Analytical methods in vibrations (Macmillan series in applied mechanics)

Although it was first printed in 1967, this book is still be a bible for mechanical vibration. The book provides wide ranges calculation methods in various systems. Examples are not too hard to get trough (for one who are quite similar with mechanical stuffs and high-level mathmatics). This book is also a course reserved text book for graduate vibration course at Carnegie Mellon University.