 As permanent secretary , ML Pin acted as the head delegate for Thailand to the third UNESCO General Conference in Beirut in 1948 , where Thailand was an observer , and represented Thailand as the country filed for membership in 1949 and was accepted as the fifty @-@ fifth member state . He served as director and coordinator for the Seminar on Rural Adult Education in Mysore , India , that year , and regularly represented Thailand in subsequent UNESCO meetings . 
