• 29 Videos, Slides, Films

• 12 Earth sciences
• 12 Physical geography
• 8 Geology
• 8 Landforms
• 8 Natural resources
• 8 Water use
• 4 Earth (Planet)
• 4 Mantle
• 3 Agriculture
• 3 Crust
• 3 Documentary films
• 3 Geology, Structural
• 3 Lithosphere
• 3 Nature
• 3 Physical geology
• 3 Science
• 3 Weather
• 3 Zoology
• 2 Climate
• 2 Earth currents
• 2 Geodynamics
• 1 Atmosphere
• 1 Civil engineering
• 1 Engineering

• 29 PBS (Firm)
• 26 Infobase
• 25 Films Media Group
• 3 J. Hayes, Michael
• 3 Kanopy (Firm)
• 1 Greenwood, Steve
• 1 Lanchester, Alex
• 1 Wright, Matthew

• 29 English

• 5 Europe
• 2 North America
• 1 Africa
• 1 Africa, North
• 1 Africa, Sub-Saharan
• 1 Asia
• 1 Central America
• 1 South America

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