(3OGhO h SdjeGf (B: (3aj GdYgO GdbOje h GdbQBf GdcQje OQGSI dZhjI JGQjNjI ebGQfI (B/ s - (3GdCMeO, CMeO YjSis ((3GdchjJ (B:s (3GdeDda,s, 1990)
Keywords: (3GdYgO GdbOjes; (3GdOjGfGJ GdebGQfIs; (3GdbQBf GdcQjes; (3GdCfHjGAs