Film: Erpi Classroom Films Inc
- 1933
Electrostatics (1933)
Electrostatics01933HD
...
![Electrostatics]()
- 1939
The Soybeans (1939)
The Soybeans01939HD
...
![The Soybeans]()
- 1938
The Alimentary Tract (1938)
The Alimentary Tract01938HD
...
![The Alimentary Tract]()
- 1943
Sound Recording and Reproduction (Sound on Film) (1943)
Sound Recording and Reproduction (Sound on Film)01943HD
...
![Sound Recording and Reproduction (Sound on Film)]()
- 1940
Furniture Craftsmen (1940)
Furniture Craftsmen01940HD
...
![Furniture Craftsmen]()
