Brevik, E. C., Abit, S., Brown, D., Dolliver, H., Hopkins, D., Lindbo, D., Manu, A., Mbila, M., Parikh, S. J., Schulze, D., Shaw, J., Weil, R., & Weindorf, D. (2015). Soil Science Education in the United States: History and Current Enrollment Trends. Journal of the Indian Society of Soil Science, 62(4). https://epubs.icar.org.in/index.php/JISSS/article/view/47168