(3eOGNd GdeDdajf hGdGYdGe GdYQH MJi YGe (B1215(3g (B1800(3e (B/ s - (3acQi GdLRGQ (B((3GYOGO(B)s ([S.N] : (3ecJHI Gdedc agO GdhWfjI , s, 1991)
Keywords: (3GYdGe GdYQHs; (3GdeDdahf GdYQHs; (3GdHHdjhLQGajG GdPGJjIs