State University. Agricultural Experiment Station, O., Maize and Wheat Improvement Center, I., & States. Agency for International Development, U. (1997). Results of the Eighteenth International Early Maturing Winter X Spring Wheat Screening Nursey (1995-1996). : Corvallis, OR : Agricultural Experiment Station, Oregon State University ; [Washington, D.C.] : Agency for International Development, U.S. Dept. of State ; [Mexico] : International Maize and Wheat Improvement Center.