After it merged into the Labor Party in 1968 , he became a member of its central committee , bureau and socio - economic committee .
Having joined Mapai in 1950 , Blumenthal became the party 's treasurer .
After it merged into the Labor Party in 1968 , Blumenthal became a member of its central committee , bureau and socio - economic committee .
Having joined Mapai in 1950 , Blumenthal became the party 's treasurer .