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  1. Economic impacts of nitrogen and phosphorus use efficiency on nineteen intensive grass-based dairy farms in the South of Ireland
  2. Phosphorus balance and use efficiency on 21 intensive grass-based dairy farms in the South of Ireland
  3. Nitrogen balance and use efficiency on twenty-one intensive grass-based dairy farms in the South of Ireland
  4. An economic comparison of systems of dairy production based on N-fertilized grass and grass-white clover grassland in a moist maritime environment