1. Albrecht, W.A., and Smith, N.C. (1941) Bull. Torrey Botan. Club. 68,372.
2. Andrew, C.S. (1973) Lab. Pract. 23,20.
3. Andrew, C.S. (1976) Aust. J. Agric. Res. 27,611.
4. Andrew, C.S., and Hegarty, M.P. (1969) Aust. J. Agric. Res. 20,687.
5. Andrew, C.S., and Johansen, C. (1976) Plant relations in pastures, (Ed. Wilson, J.R.)(C.S.I.R.O. Melbourne)(in press).