Mashhad, Khorassan Razavi Prov., Oct 30, IRNA -- The 11th TELLSI International Conference opened in Mashhad, Khorassan Razavi Province, on Wednesday. Renowned professors, students and university instructors are attending the three-day meeting, which will end on November 1. Secretary of the Conference, Khalil Motalebzadeh told IRNA that 600 university ...