| Title / Condition | Highlights | Price |
|---|---|---|
| On the Economy of Machinery and Manufactures Babbage, Charles / Used - Hardcover | $49.95 | |
| Principles of Political Economy John Stuart Mill;William Ashley [Editor] / Used - Hardcover | As new | $49.00 |
A recursive apparatus for the detection of philosophical rarities.
| Title / Condition | Highlights | Price |
|---|---|---|
| On the Economy of Machinery and Manufactures Babbage, Charles / Used - Hardcover | $49.95 | |
| Principles of Political Economy John Stuart Mill;William Ashley [Editor] / Used - Hardcover | As new | $49.00 |