HarperCollins · Pergamon Press
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Bilingual Guide to Business and Professional Correspondence: English-Spanish | 978-0-08-015793-1 (0-08-015793-9) | 1970 | Joseph Harvard |
| Bilingual Guide to Business and Professional Correspondence Spanish / Espanol | 978-0-08-015792-4 (0-08-015792-0) | 1970 | " |
| Spanish Grammar and Verb Tables | 978-0-00-459340-1 (0-00-459340-5) | 1985 | Alicia de Benito de Harland |