• 13 Videos, Slides, Films

• 8 History
• 6 Study and teaching
• 3 Indians of North America
• 2 Economic conditions
• 2 Mechanics
• 1 Biography
• 1 Broadcasting
• 1 Civil engineering
• 1 Command of troops
• 1 Deterrence (Strategy)
• 1 Electricity
• 1 Engineers
• 1 Explorers
• 1 Generals
• 1 Immigrants
• 1 Industries
• 1 Labor
• 1 Military art and science
• 1 Military biography
• 1 Military weapons
• 1 Powell, John Wesley, 1834-1902
• 1 Power (Social sciences)
• 1 Red Cloud, 1822-1909
• 1 Scientists
• 1 Telecommunication systems

• 13 Films Media Group
• 13 Films for the Humanities & Sciences (Firm)

• 13 English

• 7 United States
• 1 Antietam (Md.)

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