Citation: Re. Jones et al., The external costs of pasture weed spread: an economic assessment of serrated tussock control, AGR ECON, 22(1), 2000, pp. 91-103
Citation: Mh. Campbell et al., Effect of additional cobalt, copper, manganese, and zinc on reproduction and milk yield of lactating dairy cows receiving bovine somatotropin, J DAIRY SCI, 82(5), 1999, pp. 1019-1025