(3GdefhajI ai GdbQf GdKGef YTQ (B/ s - (3jGSQ YHOGdefYe eMGQjbs ((3GdbGgQI (B: s (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 2000)
Keywords: (3GdMjGI GdQjajIs; (3efha (B- (3JGQjNs; (3efha (B- (3GdUfGYGJs; (3GdeMGce (B- (3efhas; (3efha (B- (3GdGMhGd GdGLJeGYjIs; (3GdRQGYI (B- (3efhas