(3QMdI Edi GdeGVj GdYQHj (B/ s - (3Hhdc, hjdje Qs; (3eGjQR, hjdje Ls; (3GdLdGUj, YHO GdhgGHs ((3CHhXHj (B:s (3efThQGJ GdeLeY GdKbGaj,s, 1973)
Keywords: (3GdePcQGJs; (3GdMVGQI GdYQHjIs; (3JGQjN GdYQHs