| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Introduction to Biology | 978-0-7575-7036-0 (0-7575-7036-4) | 2009 |
| INTRODUCTION TO BIOLOGY, PART 3 | 978-0-7575-6232-7 (0-7575-6232-9) | 2009 |
| THE ORIGINS AND ESSENTIALS OF LIFE, UNITS 1 AND 2 | 978-0-7575-6117-7 (0-7575-6117-9) | 2009 |
G. K. · Gerhard Kern · Gerhard Koren · Gerhard Krähahn · Gerhard Kramm · Gerhard Kroon