(3GdchGcHj (B: s (3GdeUdM GdYQHj h YGde GdELJeGY (B/ s - (3YfGjJ, QGLjs ((3HjQhJ (B:s (3GdeDSSI GdYQHjI ddOQGSGJ h GdfTQ,s, 1988)
Keywords: (3GdJQGLes; (3fGTFhf UZGQ (B(10-14 (3SfI (B)s