(3YbO GdYdGL Hjf GdfXQjI hGdJWHjb (B/s - (3eCehf, YHO GdQTjO s ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI,s, 1986)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdCWHGA s -- (3hVY bGfhfj, bhGfjf, EdN(B. s -- (3eUQs; (3GdWH s -- (3bhGfjf hJTQjYGJs -- (3eUQs