World Spider Catalog
wsc.nmbe.chA versioned taxonomic catalogue of spiders
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A versioned taxonomic catalogue of spiders
A global bird classification with English naming guidelines
Detailed bird life histories with maps and multimedia
Mammal taxonomy tracked through versioned releases
Fish nomenclature and classification with literature search
A national reference work on Bangladesh
Catalan reference search across substantial published works
French dictionary and encyclopedia reference
French encyclopedia reference with atlas tools
Biographical lookup with period and occupation filters
Swedish-language reference about Finland
Norwegian encyclopedia entries across a broad subject range
A Danish reference portal spanning subjects and source works
A scholarly multimedia reference to Swiss history
Biographical reference across the German-speaking world
Classical texts and research tools in a digital library
Ancient-history articles with illustrations and topic browsing
Greek mythology profiles grounded in classical texts and art
Acronym meanings organized by subject context
Decode shorthand by topic or search direction
Definitions connected to sentence examples and grammar articles
Dictionary, thesaurus and grammar reference in one service
Dictionary search with wildcard and meaning-based queries
English meanings connected to examples and related words