Great resources on toxic substances and more!!
Check out the Literature Searching tab/page of the Literature Reviews library guide for database searching tips and tricks!
"Grey literature stands for manifold document types produced on all levels of government, academics, business and industry in print and electronic formats that are protected by intellectual property rights, of sufficient quality to be collected and preserved by libraries and institutional repositories, but not controlled by commercial publishers; i.e. where publishing is not the primary activity of the producing body."
12th International Conference on Grey Literature, 2010