(3YQGHi RYje GdadGMjf(B: (3eSQMjI TYQjI (B/ s - (3YHOGdQMef GdTQbGhis ((3GdbGgQI (B: s (3eQcR GdGgQGe ddJQLeI hGdfTQ , s, 1985)
Keywords: (3GdGOH GdYQHis; (3GdTYQ GdeSQMis