(3HYO GdSbhW (B/ s - (3ejddQ(B, (3GQKQs; (3Ydi TdT (B((3JQLeI(B)s ((3GdbGgQI (B: s (3GdOGQ GdbhejI ddWHGYI hGdfTQ , s, 1966)
Keywords: (3GdGOHs; (3GdGOH GdGfLdjRis; (3GdGOH GdGfLdjRi GdeJQLes