1923 M. W. Sentsius in Ann. Assoc. Amer. Geographers 13 216 One of the first problems the pedologist has to solve to the satisfaction of the geographer is the development of an adequate soil classification.

1947 R. F. Daubenmire Plants & Environment iii. 75 Pedologists recognize three major soil zones across this region, although these intergrade in a perfect series.

1997 Philos. Trans. (Royal Soc.) B. 352 964/2 Experienced pedologists often choose typical sites as representatives, instead of randomly, and prediction from these can work well.