(3YKeGf GdehUdj (B: s (3bUI MjGJg hYHbQjJg (B/ s - (3GdHcQj , YKeGf s ((3HZOGO (B: s (3OGQ GdTDhf GdKbGajI GdYGeI , s, 1990)
Keywords: (3GdehSjbjhf s -- (3JQGLe s