| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Contact English: 1 & 2 - Wallcharts | 978-0-435-28374-2 | 1977 | Colin Granger |
| Contact English: Bk. 1 | 978-0-435-28371-1 | 1977 | " |
| Contact English: Bk. 2 | 978-0-435-28068-0 | 1978 | " |
| Contact English: Cassettes Bk. 1 | 978-0-435-28373-5 | 1978 | " |
| Contact English: Tchrs' Bk. 1 | 978-0-435-28370-4 | 1977 | " |
| Contact English: Tchrs' Bk. 2 | 978-0-435-28067-3 | 1978 | " |