(3QaGYg GdWgWGhi QGFO GdJfhjQ ai GdYUQ GdMOjK (B/ s - (3eMeO YeGOGdOjf GSeGYjd (B((3eJQLe(B)s; (3eMeO YeGQIs ([S.N] : (3OGQ GdTQhb , s, 1988)
Keywords: (3QaGYI GdWgWGhis