(3hKGFb GdCQQOfjI (B1981 : s (3JaGUjd eDGeQI GdfXGe GdWGFaj GdaFhj GdShQj HGdEYJOGA Ydi MjGI GdSjO eVQ HOQGf QFjS hRQGA GdCQOf (B/ s ((3YeGf (B:s (3hRGQI GdEYdGe , OGFQI GdeWHhYGJ h GdfTQ,s, 1981)
Keywords: (3JGQjN GdCQOfs; (3GdEZJjGds; (3eVQ HOQGf, QFjS hRQGA GdCQOfs