| Titel | ISBN-13 (ISBN-10) | Erscheinungsjahr |
|---|---|---|
| Increasing Crop Production Via K Spray, The Cheapest Way To Prosperity: Productivity of crops around the world can be increased significantly by Foliar Spray of Potassium Fertilizers | 978-3-8443-O165-6 (3-8443-O165-8) | 2011 |