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Subjects
- Agriculture -- Michigan.2
- Airplanes.1
- Earthquakes.1
- Farm life -- Michigan.1
- Finnish Americans -- Michigan.1
- Geology.1
- Immigrants -- Michigan.1
- Laboratories.1
- Military art and science.1
- Race relations.1
- Radar.1
- Remote sensing.1
- Rural development.1
- Seismology.1
- Social reformers -- Michigan.1
- Temperance -- Michigan.1
- Women -- Michigan -- Societies and clubs.1