Is cannabis a stepping stone for cocaine?

J.C. van Ours

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@article{c1213d1ca5424627938c79708031d4d5,

title = "Is cannabis a stepping stone for cocaine?",

author = "{van Ours}, J.C.",

note = "DP 0198 Pagination: 15",

year = "2003",

language = "English",

volume = "22",

pages = "539--554",

journal = "Journal of Health Economics",

issn = "0167-6296",

publisher = "Elsevier Science BV",

number = "4",

}