GJAE. “51. GEWISOLA-Tagung (28.-30.09.2011) Einladung Zur Einreichung Von Beiträgen”. German Journal of Agricultural Economics 59, no. 4 (December 1, 2010). Accessed November 22, 2024. https://www.tib-op.org/ojs/index.php/gjae/article/view/1813.