What to do about your invention /
| Main Author: | |
|---|---|
| Format: | Book |
| Language: | English |
| Published: |
New York :
Leisure league of America,
1934.
|
| Series: | Leisure league little book, no. 5
|
| Subjects: |
| Physical Description: | 109 pages : diagram ; 21 cm. |
|---|