(3MSGH GdJaGVd hGdJcGed ddLGeYGJ hGdgfOSI GdJMdjdjI (B/s - (3JGjdhQ s; (3hjO s; (3ShOGf , eMeO YGOd s ((3HjQhJ (B:s (3eDSSI GdQSGdI ,s, 1981)
Keywords: (3GdJaGVd hGdJcGed s