Grey Literature is a valuable supplement to peer reviewed literature in addictions. Authored by researchers and practitioners in all levels of government, universities, corporations, research organizations, NGOs, and professional organizations, grey literature includes: country profiles, data & statistics, clinical trial registries, policy documents, in-depth reports, white papers, more.
The search engines below enable you to search across multiple intergovernmental or non-governmental agencies simultaneously. for grey literature.
Search Tips (try variations - with/without dates; search phrases with/without quotation marks):
The NGO search engine is a good resource for identifying stakeholder interests