| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Introduction to the History of Crop Development: Theories, Methods, Achievements, Institutions, and Persons | 978-1-56O22-146-3 (1-56O22-146-1) | 2007 |
H.S. · H. Schlegel · J. H. · J H Schlegel · J. S. · R. H. · R.J. · R. S. · Rolf Schlegel