Scientific American, v. 160, n. 1, 1939
Item
- Title
- Scientific American, v. 160, n. 1, 1939
- volume
- 160
- issue
- 1
- Date Issued
- 1939-01
- Is Part Of
-
Scientific American
- Rights
- Public Domain
Linked resources
| Title | Class |
|---|---|
 Absolute Altimeter and Collision Indicator |
|
 Propeller Stresses Measured in Flight |
|
 Rifle Shell Fire Alarm |
|
 Streamlined Wheels |
|
 The Helicopter Triumphant |
|
 Unitwin Power Plant |