title: US farm-science head quits.
authors.forename: Heidi
authors.initials: H
authors.lastname: Ledford
mesh_terms: D000383:Agriculture; D006078:Government Programs / Q000191:economics / Q000592:standards / Q000639:trends; D012106:Research / Q000191:economics; D014481:United States; D016885:United States Department of Agriculture; D000078329:Workforce