(3GdGbJUGO GdeGdj (B/s - (3YHO GdcQje UGOb HQcGJ s ((3GdGScfOQjI (B:s (3efTCI GdeYGQa,s, 1977)
. 240-220 (3HHdjhLQGajG(B: (3UaMGJ(B.s
Keywords: (3GdeGdjI GdYGeI hGdJTQjY GdVQjHjs