(3HjQhJ HjQhJ (B((3QhGjI(B) / s - (3UfY Gddg GHQGgjes ([S.N] : (3OGQ GdeSjQI ddfTQ hGdJhRjY hGdWHGYI , s, 1988)
Keywords: (3GdGOH GdYQHis; (3GdbUU GdYQHjIs; (3dHfGfs