Introduction (Portable Novels of Science)
| First published | September 1945 |
|---|---|
| Type | Essay |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| September 1945 |
|
The Portable Novels of Science | The Viking Press | Omnibus | vii |
| December 1948 | The Portable Novels of Science | The Viking Press | Omnibus | vii | |
| October 1950 | The Portable Novels of Science | The Viking Press | Omnibus | vii |