[OnlyOneCannolo]

Do you happen to remember any specific textbook? I'd be interested to see an example, assuming that they're still available in some format.

[rramadass]

Many of the Soviet-era textbooks (mainly by Mir Publishers) are now published by low-cost Indian publishers and available on Amazon.in. Just search Amazon.in for Piskunov, Irodov, Vygodsky etc.

[udev]

See my reply to other similar question in this thread.