(3Gdfeh GdeLJeYj (B:s (3NeS efWdbGJ eY fJGFL GdJMdjd GdebGQf (B/s - (3JThOGc, Sjehfs; (3GdMSf, YHO GdMejOs ((3OeTb (B:s (3efThQGJ hRGQI GdKbGaI hGdEQTGO Gdbhej,s, 1980)
Keywords: (3GdJNWjW GdGLJeGYjs; (3GdJfejI GdGLJeGYjIs