(3OQGSGJ ai GdOjebQGWjI GdeUQjI (B/ s - (3WGQb GdHTQis ((3GdbGgQI (B: s (3OGQ GdTQhb , s, 1987)
Keywords: (3GdYUQ GdMOjKs; (3eUQs; (3JGQjNs; (3GdGMhGd GdSjGSjIs; (3GdOjebQGWjIs; (3GdOSJhQs; (3KhQI (B23 (3jhdjh (B1952s; (3eUQ (B- (3JGQjN (B- (3GdYUQ GdMOjK (B- (3KhQI (B1919s