(3eONd Edi GdUMGaI (B:s (3LhdI aj bGYI GdJMQjQ (B/s - (3QCj Jjd,djhfGQO,JjdhQ,Qhf s; (3YHGS(B,(3MeOj s ((3GdbGgQI (B:s (3GdOGQGdOhdjI ,s, 1990)
Keywords: (3GdUMGaIs; (3bGYI GdJMQjQ s