(3GdPQGJ hGdWHjYI hGdGfSGf (B/ s - (3SjO QeVGf gOGQI (B((3eJQLe(B)s; (3eMehO eNJGQs; (3gGjfJQ(B, (3fjd Gs ([S.N] : (3bSe GdfTQ HGdLGeYI GdGeQjcjI , s, 1972)
Keywords: (3GdHjFIs; (3GdPQGJs; (3GdWGbI GdPQjIs; (3gfOSI GdWGbIs; (3GdgfOSI GdfhhjIs; (3JMWje GdPQIs; (3GdfjhJQhfGJs