Article

Johnes, P. and Heathwaite, A. L. (1992) A procedure for the simultaneous determination of total nitrogen and total phosphorus in freshwater samples using persulphate microwave digestion. Water Research, 26 (10). pp. 1281-1287. ISSN 0043-1354

Robinson, J. S. ORCID: https://orcid.org/0000-0003-1045-4412, Syers, J. K. and Bolan, N. S. (1992) Importance of proton supply and calcium‐sink size in the dissolution of phosphate rock materials of different reactivity in soil. European Journal of Soil Science, 43 (3). pp. 447-459. ISSN 1351-0754 doi: https://doi.org/10.1111/j.1365-2389.1992.tb00151.x

Robinson, J. S. ORCID: https://orcid.org/0000-0003-1045-4412, Syers, J. K. and Bolan, N. S. (1992) Influence of calcium carbonate on the dissolution of Sechura phosphate rock in soils. Fertilizer Research, 32 (1). pp. 91-99. ISSN 1573-0867 doi: https://doi.org/10.1007/BF01054398

Book

Bell, M. and Boardman, J. (1992) Past and present soil erosion: archaeological and geographical perspectives. Oxbow Monographs, 22. Oxbow Books, Oxford, pp250. ISBN 9780946897469