(3LQjeI CeQjcG aj GdNdjL (B:s (3GdCSQGQ GdcGedI (B/s - (3eMehO HcQjs ((3GdbGgQI (B:s (3eWGHY GdYQHjI (B,s, 1991)
. 240-220 (3HHdjhLQGajG(B: (3UaMGJ(B.s
Keywords: (3JGQjN SjGSjs; (3SjGSGJ GdNdjL s