I don't know where you live. There's a website https://mirtitles.org https://mirtitles.org We have the Office of University Publications here in Algeria that s

I don't know where you live. There's a website https://mirtitles.org https://mirtitles.org We have the Office of University Publications here in Algeria that sells them. I know the Piskunov one is available in their physical stores because I bought a copy a few years back (though I couldn't find the beautiful small red hard-cover with fabric that smelled so nice) and I have inherited the Smirnov's and others from my siblings. They're not trivial to find, but they're worth it.