| web | https://www.discovermagazine.com/mind/is-dirt-the-new-prozac |
| author | Josie Glausiusz |
| publication | Discover |
| date | 2007-06-14 |
| web | C.A. Lowry, J.H. Hollis | Neuroscience | 2007-05-11 | |
| web | Catharine Paddock | Medical News Today | 2007-04-02 |
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