(3eUWai GdSHGYj HCbdGe eMHjg h YGQajg (B/ s - (3GdSHGYj, eMeO eUWais ((3HjQhJ (B:s (3OGQ GdhQGb,s, 2000)
Keywords: (3GdJQGLes; (3GdabgGA GdeSdehfs; (3Gdabg GdESdGejs