Twins and Doubles: Time for the Stars and Double Star
| First published | March 1976 |
|---|---|
| Type | Essay |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| March 1976 |
|
Robert A. Heinlein: Stranger in His Own Land | Borgo Press | Nonfiction | 1 |
| July 1977 |
|
Robert A. Heinlein: Stranger in His Own Land, Second Edition | Borgo Press | Nonfiction | 9 |
| February 1979 | Robert A. Heinlein: Stranger in His Own Land, Second Edition | Borgo Press | Nonfiction | 9 |