(3QbGHI GdbVGA dCYeGd GdEOGQI GdYGeI (B/ s - (3WYjeI GdLQas ((3GdbGgQI (B: s (3ecJHI GdbGgQI GdMOjKI, s, 1970)
(3jTJed Ydj GQLGYGJ HHdjhLQGajIs
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdGNJUGU GdbVGFj deLdS GdOhdIs