(3JfXje GdeUGfY hEOGQI GdEfJGL (B/s - (3eMeO YRJ SdGeIs ((3GdbGgQI (B:s (3GdeLdS GdCYdj ddYdhe ,s, 1961)
(3jTJed Ydj GQLGYGJ HHdjhLQGajI(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdEfJGLs; (3GdeGdjI GdYGeI hGdJTQjY GdVQjHjs