(3gfOSI GdMjGI GdYUQ GdUfGYi ddHjhJcfhdhLjG (B/ s - (3GMeO eSJLjQs; (3jGfTfci SJjaGfis ([S.N] : (3GdGOGQI GdYGeI dQYGjI GdTHGH , s, 1990)
Keywords: (3GdhQGKIs; (3GdgfOSI GdhQGKjIs; (3GdGMjGAs; (3GdGMjGA GdObjbIs; (3GdcQhehSheGJ (B- (3Yde GdhQGKIs