(3GdJChjd hGdeaGQbI (B: (3fMh JCUjd adSai ddfXQ GdSjGSi GdYQHi (B/ s - (3ceGd YHOGddWjas ([S.N] : (3GdeQcR GdKbGai GdYQHi , s, 1987)
Keywords: (3GdYGde GdYQHis; (3GdSjGSIs; (3GdOjebQGWjIs; (3GdYdeGfjIs