Title : Risky Behavior among Youths : An Economic Analysis Rosalie L. Pacula,Michael Grossman,Frank J. Chaloupka,Patrick M. O’Malley, Lloyd D. Johnston,Matthew C. Farrellysemanticscholar(2000)引用 0|浏览1暂无评分AI 理解论文溯源树样例生成溯源树,研究论文发展脉络Chat Paper正在生成论文摘要