Pioneering the helicopter /
| Main Author: | |
|---|---|
| Format: | Book |
| Language: | English |
| Published: |
New York London :
McGraw-Hill book company, inc.,
[1945]
|
| Subjects: |
| Item Description: | "References": page 161. |
|---|---|
| Physical Description: | xiv, 161 pages : frontispiece, illustrations (including map) plates, portraits, facsimiles ; 21 cm. |