University of Minnesota. Agricultural Experiment Station2013-11-122013-11-121961-05https://hdl.handle.net/11299/16018024 pagesred clover varieties, bovine leukemia, Red River Valley soil, plant tissue culture, subsoil fertility and soil tests, social security, federal beef grades, nematodes, hay treatment and feeding trials, electronic motors, world seed year, creep-fed beef calves, trace elements, problems of testing chemically treated foods and feedsen-US