This landmark paper by Burgess & Webster (1980a) signalled a new era in the spatial mapping of the soil. The emergence of pedometrics as a distinct subdiscipline of soil science was a gradual process, and had its roots in earlier studies than this one, but if one publication is to mark the start of pedometrics, then this is it.
Lark, R., Heuvelink, G., & Bishop, T. (2019). Landmark Papers no. 8: Burgess, T.M. & Webster, R. 1980. Optimal interpolation and isarithmic mapping of soil properties. I. The semi-variogram and punctual kriging. Journal of Soil Science, 31, 315-331: Commentary on the impact of Burgess & Webster (1980a). European Journal of Soil Science, 70(1), 7-10. https://doi.org/10.1111/ejss.12749