Peter Berthold

• Avian Migration
• Effects of Climate Change on Birds
• Vo˜gel fu˜ttern - aber richtig
• Electron microscope identification of a dental plaque microorganism
• Electron microscopic identification of a dental plaque micro-organism Streptococcus mutans, using immunohistochemistry
• Konstellationen
• Unsere Vögel
• Vögel Malbuch Für Erwachsene