(3GdJTQjYGJ GdeJYdbI HGdGKGQ (B/ s - (3aGQhb aGjb GQeGfjhS (B((3GYOGO(B)s ([S.N] : (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1982)
Keywords: (3eUQs; (3bhGfjf hJTQjYGJs; (3GdGKGQ GdaQYhfjIs; (3GdeDSSGJ GdYGeIs