(3GYdGe GdYQGb GdMOjK (B1869-1969(3bGehS JQGLe (B/s - (3GdhQO ,HGbQ Gejf s; (3eYQha,fGLj s ((3HZOGO(B:s (3eWHYI GhajSJ GdejfGA s, 1978)
Keywords: (3GdQLGd (B-(3JQGLe s