. "Potassio"@it . "2008-05-04" . . . . "Kalium"@it . . "Potassium"@it . . . . . . . . . . . . . . . . . . . . "FONTE: Soggettario; Treccani.it; DeM; VLI; Zin; AGROVOC; ECG; EDA; LSG; MESH(IT); ThIST; ThPRE; WebDewey(IT); Wikipedia(IT)" . "669.725"^^ .