1. Pastures, pests and productivity: Simple grazing models with two herbivores;Barlow;N.Z. J. Ecol.,1987
2. Pattern of herbage growth during lactation and level of herbage mass at lambing: Their significance to animal production;Bircham,1984
3. The influence of sward condition on rates of herbage growth and senescence in mixed swards under continuous stocking management;Bircham;Grass and Forage Science,1983
4. Developments in dairy cow feeding and pasture management;Bryant,1982
5. Present and future grazing systems;Bryant,1990