The Science of Sleep: What It Is, How It Works, and Why It Matters
| Country | USA |
| Brand | HARTMANN H |
| Manufacturer | Hartmann USA, Inc. |
| Binding | Misc. |
| ItemPartNumber | 168644 |
| Model | 168644 |
| ReleaseDate | 2017-06-19 |
| Size | 5-51/2 X 13 Inch |
| UnitCount | 168 |
| EANs | 4049500860819 |