Authors
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| Nickname | Name | Country | Action |
|---|---|---|---|
| Harnish | Verne | US | Browse Items |
| The Humphrey Group Inc. | - | US | Browse Items |
| John P | . Kotter | US | Browse Items |
| John P. | Kotter | US | Browse Items |
| Clear Thinking | Vision Plus | US | Browse Items |
| John P. Kotter | Kotter | US | Browse Items |
| Napoleon Hill | Hill | US | Browse Items |
| Vision Plus | Clear Thinking | US | Browse Items |
| Vision Plus | Clear Thinking | US | Browse Items |
| Robert D. Clarke | Clarke | US | Browse Items |
| Vision Plus | Clear Thinking | US | Browse Items |
| Verne Harnish | Harnish | US | Browse Items |
| Paul W. Jenkins | Jenkins | US | Browse Items |
| Chris Hadfield | Hadfield | US | Browse Items |
| Vision Plus | Clear Thinking | US | Browse Items |
| Ries | Al, Laura | US | Browse Items |
| Hindle | Tim | US | Browse Items |
| Jenkins | Paul W. | US | Browse Items |
| Hadfield | Chris | US | Browse Items |
| Jenkins | Paul W. | US | Browse Items |