conventionDeclaration ncarules detailLevel http://ica-atom.org/doc/RS-2#5.4 viaf person Sukumar Sen 1900-1992 Bengali linguist conventionDeclaration Royal Asiatic Society Triennial Gold Medal 1984 - Professor Sukumar Sen Correspondence regarding Conferment of the Medal Letter from Professor Sukumar Sen to Mr D.J. Duncanson Letter from Sukumar Sen to Mr Duncanson, 2 May 1984