(3GdHPhQ GdchfjI (B/ s - (3GMeO eSJLjQs; (3ghjd, aQjOs; (3eGSjfL, TGfOQGhjcQs ([S.N] : (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1989)
Keywords: (3GdYdes; (3GdJGQjN GdWHjYis; (3GdGMjGAs; (3GdJZjQ GdHjhdhLis