TY - JOUR AB - AU - Northern Research and Demonstration Farm DA - 2002/1// IS - 1 VL - 2001 PB - Iowa State University Digital Press PY - 2002 TI - Information on Experiments in Previous Annual Progress Reports T2 - Iowa State University Research and Demonstration Farms Progress Reports UR - https://www.iastatedigitalpress.com/farmreports/article/id/4480/ ER -