Problems in Undergraduate Physics??? I recently found myself interested in Physics, especially solving physics problems, I want to serie "Problem in undergraduate Physics". v.I. Mechanics, by S. P. Strelkov [and] I. A. Yakovlev. v.II. Electricity and magnetism, by S. P.Strelkov, I. A. El'tsin, and S. E. Khaikin. v.III. Optics, by V. L. Ginzburg [and others] v.IV. Molecular physics, thermodynamics, atomic and nuclear physis, by V. L. Ginzburg [and other] How can I get these books in electronic format?? Since the library was lost so I am looking for an electronically eg gigapedia.org page style, and not found on this page. Someone can help me?