(3Tjc GdVeGf hGdhOjYI hGdEFJeGf Hjf GdfXQjI hGdJWHjb (B/s - (3MGeO GdTQjas ((3GdGScfOQjI (B:s (3OGQ GdacQ GdLGeYj ,s, 1997)
. 173-171(3HHdjhLQGajG(B: (3UaMGJ(B.s
(3jTJed Ydi EQLGYGJ HHdjhLQGajIs
Keywords: (3GdTjcGJs -- (3bhGfjf h JTQjYGJs; (3GdbGfhf GdLfGFjs