Congress.gov
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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
Manuscript images and metadata for medieval-music study
Research explanations paired with charts and data explorers
Population statistics organized through maps and tables
Educational summaries on anesthesia and perioperative subjects
Radiology explanations organized around imaging topics
A collaboratively written mathematics encyclopedia
A global bird classification with English naming guidelines
Australian scientific history connected to archival sources
Enterprise IT reporting and technical reference coverage
Official MLA guidance on writing and documentation
Articles, maps and timelines on Jewish history and culture
A community-edited reference for recordings and releases
Biomedical literature citations with precise search routes
Decode shorthand by topic or search direction
Full-text book search through a large book index
Textbooks available through a multilingual portal
Astronomical objects connected to literature and identifiers
Explore chemical elements through the periodic table