• 3 Videos, Slides, Films

• 3 Heat
• 3 Study and teaching
• 2 Dynamics
• 2 Energy consumption
• 2 Energy development
• 2 Environmental aspects
• 2 Management
• 2 Mechanics
• 2 Natural resources
• 2 Power resources
• 2 Quantum theory
• 1 Discoveries in science
• 1 History
• 1 Physical geography

• 3 Films for the Humanities & Sciences (Firm)
• 1 BBC Worldwide Ltd
• 1 Cambridge Educational (Firm)
• 1 Video Education Australasia

• 3 English

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