(3GdCSGdjH GdQjGVjI aj GdHMK GdGbJUGOj (B:s 1- (3GdJaGVd GdHSjW (B/s - (3RcQjG CMeO fUQ(B.s ((3GdbGgQI(B:s (3eYgO GdOQGSGJ GdYQHjI GdYGdjI (B,s, 1960)
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdeGdjI GdYGeI hGdJTQjY GdVQjHj(B.s