References Treccani.itTreccani.it: Enciclopedia, Vocabolario
; AGROVOCFAO <Food and Agriculture Organization of the United Nations> AGROVOC Multilingual thesaurus
; CABCommonwealth agricultural bureaux International, CAB Thesaurus
; ; DizSalDizionario della salute
; ; TaxThe Taxonomicon & Sistema Naturae 2000, editor S.J. Brands
; UniProtUniProt [Universal Protein Resource], by UniProt Consortium
; ; Wikipedia(IT)Wikipedia. L'enciclopedia libera, 2001 [ed. in lingua italiana dell' enciclopedia online Wikipedia]
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