| Titel | Veröffentlichungsdatum | Sprache | Zitate |
|---|---|---|---|
| Masthead | 1973/04/01 | English | |
| Masthead | 1984/02/01 | English | |
| Masthead | 1985/02/01 | English | |
| Masthead | 1969/01/01 | English | |
| Masthead | 1984/12/01 | English | |
| Masthead | 1985/06/01 | English | |
| Masthead | 1977/08/01 | English | |
| MastHead | 1981/11/01 | English | |
| Masthead | 1981/01/01 | English | |
| Masthead | 1981/10/01 | English | |
| Masthead | 1980/03/01 | English | |
| Masthead | 1981/07/01 | English | |
| Masthead | 1981/04/01 | English | |
| Masthead | 1981/02/01 | English | |
| Masthead | 1975/03/01 | English | |
| Masthead | 1976/11/01 | English | |
| Masthead | 1976/05/01 | English | |
| Masthead | 1976/02/01 | English | |
| Masthead | 1972/03/01 | English | |
| Masthead | 1972/04/01 | English | |
| Masthead | 1971/09/01 | English | |
| Masthead | 1972/11/01 | English | |
| Masthead | 1971/10/01 | English | |
| Masthead | 1971/07/01 | English | |
| Masthead | 1971/04/01 | English | |
| Masthead | 1974/03/01 | English | |
| Masthead | 1968/12/01 | English | |
| Masthead | 1976/06/01 | English | |
| Masthead | 1976/07/01 | English | |
| Masthead | 1984/03/01 | English |