(3ShSjhdhLjG GdNHQ GdUMai(B: (3OQGSI ai GfJbGA hfTQ GdGNHGQ (B/ s - (3YHOGdaJGM YHOGdfHis ((3GdbGgQI (B: s (3GdYQHi ddfTQ hGdJhRjY , s, 1989)
Keywords: (3GdMcheIs; (3GdMcheI hGdUMGaIs