Chapters by Dr. Holger Preetz

• Book Chapter Basics and Application of Ground-Penetrating Radar as a Tool for Monitoring Irrigation Process
  by Kazunori Takahashi, Jan Igel, Holger Preetz and Seiichiro Kuroda in the book "Problems, Perspectives and Challenges of Agricultural Water Management" edited by Manish Kumar, ISBN 978-953-51-0117-8, InTech, March 3, 2012