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Structural language properties in a comparative database

Bible search with precise control over the books searched

Educational collections of historical source texts

A configurable vault for credentials and reference data

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

Discover peer-reviewed open-access books and publishers

Discover linked publications, datasets and research software

Physical constants linked to units and uncertainty guidance

Spectral lines and atomic energy-level reference data

A connected library of Jewish texts and commentaries

Quran reading and listening organized by surah and topic

Minnesota historical entries filterable by topic and era

Oklahoma history searchable by name, era and topic

Cleveland historical articles with a multimedia search

Standardized bacterial information at strain level

Concise biographies of figures in Welsh national life

Search legislation and congressional records

Histories of English words and their earlier forms

Taxonomic lookup for living reptile species

Treaty records and depositary information

Visual-art history through artists, movements and ideas