v.1. Mechanics, by S. P. Strelkov [and] I. A. Yakovlev. v.2. Electricity and magnetism, by S. P.Strelkov, I. A. El'tsin, and S. E. Khaikin. v.3. Optics, by V. L. Ginzburg [and others] v.4. Molecular physics, thermodynamics, atomic and nuclear physis, by V. L. Ginzburg [and other] Does anyone have experience of any of these books? I currently have the 1st and 2nd book, but I haven't started working on them. If you have worked with any of the books, any opinions? How is the difficulty of the problems compared to something like Irodov's?