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Umwelt und Energie
(1982)
Environment and empire
Beinart, William, (2007)
Handbuch zur ökologischen Planung : Umweltforschungsplan des Bundesministers des Innern ; Querschnittsfragen ; Forschungsbericht 10102003
Hanke, Herbert,
Understanding conflict and the science of peace
Isard, Walter, (1992)
Introduction to regional science
Isard, Walter, (1975)
Location and space-economy : a general theory relating to industrial location, market areas, land use, trade, and urban structure
Isard, Walter, (1956)