by Hawkes, J.M, Libbin, J.D, Kohler, J.D
Published in Rangelands (2004)

by Libbin, J.D, Hawkes, J.M
Published in Research report / New Mexico State University, Agricultural Experiment Station (USA) (1995)

by Torell, L.A, Hawkes, J.M
Published in Research report / New Mexico State University, Agricultural Experiment Station (USA) (1995)

by Libbin, J.D, Hawkes, J.M
Published in Research report / New Mexico State University, Agricultural Experiment Station (USA) (1995)

by Brown, I.C, Black, R.D, King, J.M. (Hawke's Bay Catchment Board, Napier (New Zealand))
Published in Proceedings of the New Zealand Grassland Association (New Zealand) (1990)