We would walk from the CP bus terminus to Connaught Circle, grab a bite to eat at Nirulas and then make the pilgrimage to the MIR store, which used to occupy a huge space right in the middle of the circle. I don't even know what's in that space now. Probably a McDonalds or a jewelry store.
That's where I bought books by Piskunov, Nikolskii, Perelman and many many other books. I still remember being puzzled that every discovery that had one name attached to it in the the western texts that I got out of the British Council Library - the next stop in the pilgrimage - had another name, usually ending in -ov or -sky attached to it in the MIR books.
That was before the end of the Soviet Union, liberalization and Shining India. That world has faded away faster than my imagined memories of Gondor.