Summary of Smarter Faster Better: The Transformative Power of Real Productivity by Charles Duhigg|Key Concepts in 15 Min or Less
| Country | USA |
| Brand | YYZHEN |
| Manufacturer | Min Si Ltd |
| Binding | Misc. |
| Model | MS_ZZHM002 |
| Color | Yellow+black |
| Size | 8.7in |
| UnitCount | 1 |
| ReleaseDate | 0000-00-00 |