| Author's List |
| title | creator | language | description | tableOfContents | contributor | subject | created |
| Tractatus Logico-Philosophicus | Wittgenstein, Ludwig, 1889-1951 | en | Logic, Symbolic and mathematical; Language and languages -- Philosophy | 2004-05-01 | |||
| Symbolic Logic | Carroll, Lewis, 1832-1898 | en | 2009-05-05 |