Byron B. Blackbear and the Scientific Method
Byron B. Blackbear and the Scientific Method
This educational science program features the story of Dr. Alfred Clothear and his discovery of how bears know when to sleep for the winter.
- 类型: 动画
- 导演: Michael Sporn
- 演员: Phillip Schopper, Helena Rubinstein, John Canemaker
- 国家: United States