(3GdJcGed GdGbJUGOj Hjf Ohd eLdS GdJYGhf GdNdjLj (B: s (3EfLGRGJg hJMOjGJg (B/ s ((3eDSSI THGH GdLGeYI , s, 2000)
Keywords: (3GbJUGO NdjLj, JcGed GbJUGOj, JYGhf GbJUGOj, JfejI NdjLjIs