(3MQH Ce SdGe s - (3OGdGS, Lhf ahSJQ s ((3GdbGgQI (B:s (3OGQ GdYGdejI ddWHY hGdfTQ (B,s, 1950)
. 240-220 (3HHdjhLQGajG(B: (3UaMGJ(B.s
Keywords: (3SjGSGJ YGdejI s; (3MQH EjQGfs; (3SjGSI s