(3ebOeI aj hSGFd GdGJUGd GdLeGgjQjI (B/s - (3Odjh, aVjds ((3GdLRGFQ (B:s (3OjhGf GdeWHhYGJ GdLGeYjI ,s, 1998)
Keywords: (3GdJWhQ GdJGQjNjs; (3GddGaJI GdGYdGejI s; (3hSGFd GdGJUGd s