Factors Governing the Preservation of Insoluble Soil Organic Matter
P. F. van Bergen, C. J. Nott, I. D. Bull, R. P. Evershed and P. R. Poulton
Organic Geochemistry Unit, School of Chemistry, University of Bristol, Bristol BS8 1TS, UK
Soil Science Department, IACR-Rothamsted, Harpenden, Herts. AL5 2JQ, UK