Coney, S. L. (2) Fryxell, John M. (university Of Guelph), Sinclair, Anthony R. E. (university Of British Columbia), Caughley, Graeme (csiro Research) (2) Bowler, John (2) Weller, John, Culsan, Lola (1) Weller, John, Culsán, Lola (1)