(3GdQjGV GdeSJWGHI aj LedI eG Qhi aj GdUMjMjf ef GdUMGHI (B/s - (3GdYGeQj GdMQVj, jMji Hf CHj HcQ Hf eMeO,s 816-893 (3g`(B.s ((3GdOhMI(B-(3bWQ(B:s (3OGQ GdEeGe GdHNGQj,s, 1979)
Keywords: (3GdUMGHI hGdJGHYhfs; (3GdMOjKs -- (3QhGjIs; (3GdMOjKs -- (3JQGLe GdQhGIs