(3fTCI h JWhQ GdcJGHI GdNWjI GdYQHjI h OhQgG GdKbGaj h GdELJeGYj (B/ s - (3Yajaj, ahRj SGdes ((3GdchjJ (B:s (3hcGdI GdeWHhYGJ,s, 1980)
Keywords: (3GddZI GdYQHjIs; (3GdNWs; (3GdJGQjNs