"Paul Nikolai Kogerman"@en . . . . . . . . . . "1951-07-27Z"^^ . . . "1891-12-05Z"^^ . . "Paul Nikolai Kogerman (5 December [O.S. 23 November] 1891 in Tallinn \u2013 27 July 1951 Tallinn) was an Estonian chemist and founder of modern research in oil shale.Paul Kogerman was born into a family of gas factory worker (and former sailor). He went to an elementary school in 1901\u20131904 and a town school in 1904\u20131908. After town school Kogerman earned a living by teaching in church manors near Tallinn. In 1913, he was graduated from the Alexander Gymnasium in Tallinn (Reval) as an extern."@en . . .