(3GdMeGjI GdLfGFjI dMb GdWad ai GdMjGI Hjf GdbGfhf GdhVYi hGdTQjYI GdGSdGejI (B((3OQGSI ebGQfI(B) / s - (3gdGdi YHOGddGg GMeOs ([S.N] : (3OGQ GdfgVI GdYQHjI , s, 1989)
Keywords: (3GdbGfhfs; (3GdGWaGds; (3GdTQjYI GdGSdGejIs; (3Mbhb GdGfSGfs; (3Gdabg GdGSdGeis; (3GdehGWfIs