(3GdELQGAGJ GdLfGFjI JCUjdG hJMdjdG (B/s - (3QeSjS HgfGes ((3GdGScfOQjI (B:s (3efTCI GdeYGQa ,s, 1977)
. 395-387 (3HHdjhLQGajG(B: (3UaMGJ(B.s
(3jTJed Ydi EQLGYGJ HHdjhLQGajIs
Keywords: (3bGfhf GdELQGAGJ GdLfGFjIs