(3GdOei GdeJMQcg h YGde GdCWaGd (B/ s - (3HhQOG, Ofjs; (3NhQj, fLdG LQjUGJjs ((3HjQhJ (B:s (3OGQ GdeKdK,s, 1981)
Keywords: (3GdOei GdeJMQcgs; (3GdCWaGds