• 4 Videos, Slides, Films

• 1 Astronomy
• 1 Astrophysics
• 1 Celestial mechanics
• 1 Climatic changes
• 1 Environmental sciences
• 1 Ocean currents
• 1 Slinky (Toy)

• 2 ABC Commercial
• 2 Collins, Adam
• 1 Encyclopaedia Britannica, Inc.
• 1 Gorlinski, Gini
• 1 Leonard, Melinda
• 1 Muller, Derek
• 1 Switch International

• 2 Short films
• 1 Educational films

Limit year range