"Azerbaijani chemist" . . . . "1905-12-31Z"^^ . "Mammadaliyev, Yusif"@en . "1905Z"^^ . . . . . "Yusif Haydar oglu Mammadaliyev (Azerbaijani: Yusif Heyd\u0259r o\u011Flu M\u0259mm\u0259d\u0259liyev;December 31, 1905-December 15, 1961) was an Azerbaijani chemist. He was a Doctor of Chemistry, academician of the National Academy of Sciences of the Azerbaijan SSR, and was the president of the National Academy of Sciences of the Azerbaijan SSR."@en . . "Yusif Haydar oglu Mammadaliyev"@en . . . . . "1961-12-15Z"^^ . "1961Z"^^ .