(3CMcGe hBQGA aj GdbVGA GdeSJYLd (B:s (3CMOK GdBQGA Gdabgjg hCMcGe GdfbV MJi YGe (B1988 (3hGdUjZ GdbGfhfjI (B/s - (3gQLI, eUWai eLOj(B.s ((3GdEScfOQjI, eUQ (B:s (3OGQ GdeWHhYGJ GdLGeYjI,s, 1989)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdbVGA GdeSJYLds -- (3eUQs; (3fbV GdCMcGes -- (3eUQs; (3GdUjZ GdbGfhfjIs -- (3eUQs