兰德州枪支法数据库的开发及配套材料(英)
聚焦兰德州枪支法数据库的开发及配套材料(英)。will expand the number of law categories included in the dataset. As we have developed this database,we prioritized classes of laws that we knew had been implemented in many states during the past 40 years because there is more information available to help examine the effects of those laws.