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Agriculture, environment, and health: : sustainable development in the 21st century; [based on papers presented at a conference held in Bellagio, Italy, in October 1991]
Ruttan, Vernon W., (1994)
Umweltverträgliche und standortgerechte Landwirtschaft : Forschungsschwerpunkte der Rheinischen Friedrich-Wilhelms-Universität, Bonn ; Kolloquium am 7. und 14. 5. 1987 in Bonn
(1987)
Sustainable agriculture and the environment : perspectives on growth and constraints
Ruttan, Vernon W., (1992)