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Sources of productivity growth during the transition to alternative cropping systems
Jaenicke, Edward C., (1999)
Nachhaltiger Anbau von Bioenergie : eine ökonomisch-ökologische Analyse für das Umweltministerium in Baden-Württemberg
Angenendt, Elisabeth, (2011)
Organic certification, sustainable farming and return on investment : empirical evidence from Ghana
Kleemann, Linda, (2013)
Price caps and the error in X-factor calculations
Uri, Noel Dean, (2000)
Energy and the use of conservation tillage in US agriculture
Uri, Noel Dean, (1999)
Measuring productivity change in telecommunications