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Life SciencesAnimal SciencesZoologyAnimal AnatomyOrnithologySystematicsNomenclature RulesSpecies DescriptionTaxonomic ClassificationTaxonomic NomenclatureTaxonomic PrinciplesTaxonomic RankAvian Nomenclature CodesGenus-group NomenclatureScientific Naming CodesSpecies-group NomenclatureTaxonomic MonographsZoological Nomenclature