(3OjebQGWjI GdYdGbGJ GdOhdjI aj efXhQ GdQFjS fjbhdGj JTGhTjSch (B. /s - (3Ndjd , Ndjd CMeO s ([(3Ohf ecGf(B] :s (3OGQ GdMOGKI ,s, 1981)
Keywords: (3GdYdGbGJ s; (3efXhQs; (3GdOhdjI s; (3OjebQGWjIs