C. W. Raczkowski Sydorovych, O., Raczkowski, C. W., Wossink, A., Mueller, J. P., Creamer, N. G., Hu, S., … Tu, C. (2009). A technique for assessing environmental impact risks of agricultural systems. RENEWABLE AGRICULTURE AND FOOD SYSTEMS, 24(3), 234–243. https://doi.org/10.1017/S174217050999010X Raczkowski, C. W. (1989). Effects of four tillage systems on corn (Zea mays L.) root distribution in the North Carolina Piedmont. Dissertation Abstracts International. B, Sciences and Engineering, 50(2), 380.