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Educational collections of historical source texts

Curated learning-resource discovery by discipline

Guides for international and foreign legal research

Academic phrasing organized by rhetorical purpose

Anatomy articles, diagrams and three-dimensional learning material

An ophthalmology encyclopedia written by eye specialists

Enterprise IT reporting and technical reference coverage

Search legislation and congressional records

Ancient-history articles with illustrations and topic browsing

Norwegian encyclopedia entries across a broad subject range

Mineral and gemstone descriptions for reference study

Controlled terminology for art and cultural-heritage research

Concise biographies of figures in Welsh national life

A community-edited reference for recordings and releases

A biological-data resource portal from SIB

A subject-organized reference to Alabama

Regional history connected to Philadelphia's present

English definitions beside usage and collocation references

English dictionary lookup with explicit usage guidance

A global bird classification with English naming guidelines

Discover peer-reviewed open-access books and publishers

Discover linked publications, datasets and research software

Astronomical objects connected to literature and identifiers

Physical constants linked to units and uncertainty guidance