Chicago

State University. Agricultural Experiment Station, Oregon, International Maize and Wheat Improvement Center, and United States. Agency for International Development. 1991. Results of the Fifteenth International Late Maturing Winter X Spring Wheat Screening Nursery, 1987-1988. : Corvallis, [Or.] : Agricultural Experiment Station, Oregon State University ; [s.n.] : The Agency for International Development, U.S. Dept. of State ; [s.n.] : International Maize and Wheat Improvement Center.