How does state marijuana policy affect US youth? Medical marijuana laws, marijuana use and perceived harmfulness: 1991-2014
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2013 ◽
Vol 103
(8)
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pp. 1500-1506
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2015 ◽
Vol 17
(2)
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pp. 495-528
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2016 ◽
Vol 169
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pp. 26-32
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2012 ◽
Vol 22
(7)
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pp. 536-537
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2011 ◽
Vol 21
(9)
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pp. 714-716
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