(3UGfYh GdJGQjN GdYQHj (B/ s - (3MJi, ajdjHs; (3aQjMg, CfjSs ((3HjQhJ (B:s (3OGQ KbGaI ddfTQ,s, 1980)
Keywords: (3GdJQGLes; (3GdYQHs