Foto: Heike Steckel und Prof. Dr. Dr. Ewald Schnug erläutern die Mineralstoffernährung von Bäumen und ihren Parasiten (roter Kreis). (von rechts: Hamdy Abd El-Rahmann, Ewald Schnug, Heike Steckel, Ahmed Habib, Eman El-Sayed, Engy Abo Baker, Carlos Schumacher (Deutscher Koordinator der Reise), Kaled Rashed, Heidi Abdel Mageed, Jürgen Fleckenstein).
Foto: FAL-PB
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