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| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Karel++: Gentle Introduction to C++ and Object Oriented Programming | 978-0-471-13809-9 (0-471-13809-6) | 1996 | Joseph Bergin |
| Karel J Robot: A Gentle Introduction to the Art of Object-Oriented Programming in Java | 978-0-9705795-1-5 (0-9705795-1-9) | 2013 | Joseph Bergin · Mark Stehlik · Jim Roberts |