Specialist sources beyond the literature databases

This branch covers specialist sources that supplement general literature databases, divided by the material needed: grey literature, drug-development records, bioethics resources and reusable images. General literature-search methods, search-tool appraisal, full-text access and expert interviews sit outside this branch.

• Grey literature and the gaps in the scholarly record — reports and working papers, discovery gaps, growth, lost content and issuer repositories
• Databases on drugs, trials and grants — public records of approvals, trials, chemicals and grants, alongside commercial drug-development intelligence
• Finding bioethics literature and commentary — specialist collections, ethics programmes, research institutes and blogs
• Image sources and their licences — scientific image databases, icons, illustrations and reuse permissions