1. Use of the Bray soil test in forestry. 1) Predicting phosphate retention capacity;Ballard;New Zealand Journal of Forestry Science,1978
2. Use of the Bray soil test in forestry. 2) Determination of cation status;Ballard;New Zealand Journal of Forestry Science,1978
3. Puruki experimental catchment;Beets;New Zealand Journal of Forestry Science,1987
4. Description and validation of C-Change;Beets;New Zealand Journal of Forestry Science,1999
5. Soil Chemistry;Bohn,1979