| 100 Things to Know about Inventions • anticexlibris.ro | 43.99 RON |
| 100 Things to Know About the Unknown, Hardback - Micaela Tapsell • elefant.ro | 72.99 RON |
| 100 Things to Know about Saving the Planet - Jerome Martin • libris.ro | 83.65 RON |
Looks at 100 inventions from throughout history.
