(3GdOei GdeJMQcI hYGde GdGWaGd (B/s - (3HhQOG, Ofj s; (3JQLeI fLdG LQjUGJj NhQjs ((3HjQhJs (3OGQ GdeKdK ddfUeje hGdWHGYI hGdfTQs, 1981)
Keywords: (3GdOei GdeJMQcI (B-- (3GdCWaGds