(3RhLGJ hfOShQ GdeQMGJ (B/ s - (3fXjQ YHhOs; (3L(B. (3jhfS (B((3JYQjH(B)s; (3TcSHjQ, hjdjGes ((3HjQhJ (B: s (3OGQ GdLjd , s, 1989)
Keywords: (3GdeSQMjGJs; (3GdGOH GdGfLdjRis; (3GdeSQMjGJ GdGfLdjRjIs; (3TcSHjQ, hjdjGes