| title | ISBN-13 | year of publication |
|---|---|---|
| Physical Systems of the Environment | 978-0-7575-9407-6 | 2012 |
| Physical Systems of the Environment | 978-1-4652-0329-8 | 2012 |
| PHYSICAL SYSTEMS OF THE ENVIRONMENT | 978-0-7575-3219-1 | 2006 |
| Seven Continents and More: A Student Map Book | 978-0-7575-9618-6 | 2012 |
| Seven Continents and More: A Student Mapbook | 978-1-4652-1236-8 | 2012 |
| Seven Continents and More: A Student Map Book | 978-0-7575-5018-8 | 2008 |
B. L. · Beck R · Beck Robert · Christopher Beck Robert Lopez · R. L · Robert L. · Robert L Beck