| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Buying into the Environment: Experiences, Opportunities and Potential for Eco-procurement | 978-1-874719-67-O (1-874719-67-5) | 2003 |
Carsten Erdmann · Christa Erdnüß · Christian Erdmann · Christina Erdmann · Christoph Erdenberger · Christoph Erdmenger