(3MQH GdYUGHGJ aj GdUMQGA (B/ s - (3ShfjShf, BQKQ s; (3GdTQja, ceGd YUeJ s ((3HjQhJ (B: s (3GdeDSSI GdYQHjI ddOQGSGJ hGdfTQ, s, 1989)
Keywords: (3MQH GdYUGHGJ s