(3GdaGQS ai jO TjWGf (B/ s - (3aQjO YHGS (B((3eJQLe(B)s; (3Ohjd, GQKQchfGfs ([S.N] : (3OGQ GdacQ GdYQHi , s, 1989)
Keywords: (3bUU GdHWhdGJs; (3GdGWaGds; (3GdbUUs; (3bUU GdGWaGds