Understanding the Earth System: Compartments, Processes and Interactions
by E. Ehlers,T. Krafft,Eckart Ehlers
ISBN 13: 9783540675150
Format: Illustrated (312 pages) Publisher: Springer Published: 20 Jun 2001
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Environment Across Cultures: 19 (Ethics of Science and Technology Assessment)
by E. Ehlers,Carl Friedrich Gethmann
ISBN 13: 9783642073243
Format: Paperback (228 pages) Publisher: Springer Berlin Heidelberg Published: 19 Feb 2010