This theory has been considered by many mathematicians starting with Poincare, Liapunov and Birkhoff. It was then that Smale enriched the theory substantially by defining as a main objective the search for generic and stable properties and by obtaining results and proposing problems of great relevance in this context.
VTG 1958 Principles of Physics: Electricity & Magnetism by Sears (MIT) HC
You will find that this textbook has a sturdy hardcover that resists wear.
