Alumni UniID Please fill out this field using the example format provided in the placeholder. The phone number will be handled in accordance with GDPR. Count Persons (3) Contact Phone E-Mail Details Prof. em. Dr. Ernst Berg Professor emeritus of Environmental and Production Economics - e.berg@uni-bonn.de Prof. Dr. Jakob Rhyner +49 228 73 - 4973 rhyner@uni-bonn.de Prof. em. Dr. oec. Gerhard Schiefer - schiefer@uni-bonn.de
