The rarer the book is, the better. Also, if its available on libgen, don't bother giving a link. Just the name will be fine.
To start it off, I'll give you guys a rare pepe
>>8604202
if a book it's rare it's probably because it's useless
>>8604205
Just like the AoPS series, amirite?
>>8604206
what are you talking about? how are high school books which are still in print rare?
>>8604202
kasmah forma is the rarest book I've found personally.
>>8604213
why do you want these? why would someone want these? I assume if you're involved in IMO you know people who have appropriate resources available
>>8604202
So expensive.
>>8604226
what is this?
>>8604226
Interesting AF, tell me more about this book.
>>8604245
You nailed the high school part, and probably also the dunbfuck part
>>8604290
*dumbfuck