References
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Ledgard, S.F., Steel, K., Roberts, A.H.C., Journeaux, P.R. (2000). Use of OVERSEERTM to compare farm systems and countries for nutrient balances, losses and efficiency. In: Currie, L.D. & Loganathan, P. eds. Soil Research - a knowledge industry for land-based exporters. Occasional Report No. 13. Palmerston North, New Zealand. Fertilizer and Lime Research Centre, Massey University, pp. 83-91.
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