(3af GdGNQGL GdUMai (B/ s - (3TQja OQhjT GddHGfs ((3GdbGgQI (B: s (3GdYQHi ddfTQ hGdJhRjY , s, 1997)
Keywords: (3GdUMGaIs; (3GdUMGaI (B- (3JMQjQs