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| web | Russell C, Rueda S | Int J Drug Policy | 2017-12-22 |
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| web | Earleywine M, Barnwell SS | Harm Reduct J | 2007-04-16 |
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| web | Max Savage Levenson | GreenState | 2018-03-14 |
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| web | | ScienceDaily | 2015-06-23 |
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| web | Ab Hanna | High Times | 2018-04-11 |
| web | Anthony Franciosi | Leafly | 2017-06-28 |
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| web | Philip Bjorge | Leafly | 2016-06-16 |
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| web | Russell C, Rueda S | Int J Drug Policy | 2017-12-22 |
| web | Russell C, Rueda S | Int J Drug Policy | 2017-12-22 |
| web | Patrick Bennett | Leafly | 2016-04-30 |