Subjects: Industrial safety; Safety educationIowa; 1930s
تفاصيل العنوان
Subjects: College majors--Curriculum development--Greek (classical)--Latin--Mathematics--Technical education; University of MichiganStory County (Iowa); IowaStory County (Iowa)
Subjects: Agricultrual educationStory County (Iowa); IowaStory County (Iowa)
Subjects: 4-H--Farmers--agricultural--education; United State Department of Agriculture1930s