Erik BrevikProf. Brevik holds a Ph.D. in Soil Science from Iowa State University focused on pedology. His research has included investigating the use of electromagnetic induction techniques in soil mapping, evaluation of the accuracy of National Cooperative Soi Survey (USA) maps, and combining information from soil and geology maps to improve landform mapping. He has also investigated the history of soil mapping and classification, particularly as it relates to the USA. Read More Read Less