(3GdWH GdfHhi (B/ s - (3eMehO aQL GdYbOIs; (3YGOd GdGRgQis; (3GHf bje GdLhRjI(B: (3TeS GdOjf GHh YHOGddg eMeO Hf GHi HcQs ((3HjQhJ (B: s (3GdecJHI GdKbGajI , s, 1990)
Keywords: (3GdWH GdYQHis; (3GdWH GdfHhis