[Jugurtha]

- "Differential and Integral Calculus", Piskunov.

- "A Course of Higher Mathematics", Smirnov. This one could be a bit expensive, but if you find yourself in a country that has had good relations with the former Soviet Union, you might find it a a really affordable price because they had licenses to print these books, and generally speaking, the MIR Publishers, Moscow, books.

- "Problems in Mathematical Analysis", Demidovich.

- "Course of Theoretical Physics", Landau.

- "Problems in General Physics", Irodov.

You'll note that there are "course" books and "problem" books in there.

All the best,

[Utkarsh_Mood]

Would add "Aptitude Test Problems in Physics",S. S.Krotov. It is tougher than Irodov but definitely improves upon your skill in think about hard problems

[Utkarsh_Mood]

*in thinking