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Subjects
- Zoology.8
- Birds.3
- Classrooms -- Michigan -- Ann Arbor.2
- Expeditions and surveys.2
- Laboratories.2
- Scientific expeditions.2
- Women -- Michigan -- Ann Arbor.2
- African Americans -- Michigan.1
- Agriculture -- United States.1
- Agriculture.1
- Animals.1
- Anti-Nazi Movement -- United States.1
- Antisemitism -- Michigan.1
- Archaeological sites -- Yucatán Peninsula.1
- Athletics -- Michigan -- Ann Arbor.1
- Boats -- Indochina.1
- Child welfare.1
- Conservation of natural resources -- Michigan.1
- Conservation of natural resources.1
- Deaf -- Means of communication.1