| ▲ | akkartik 2 days ago | |
I had to shorten the title to fit it, but there's so much here and the Necker cube is just a final addendum. This is what publishing was intended to be like! | ||
| ▲ | jval43 7 minutes ago | parent | next [-] | |
Site is down. This should be the same PDF I think: http://wexler.free.fr/library/files/necker%20(1832)%20observ... | ||
| ▲ | kkylin 7 minutes ago | parent | prev [-] | |
[delayed] | ||