Kassam, Amir, Gottlieb Basch, Theodor Friedrich, Emilio Gonzalez, Paula Trivino, and Saidi Mkomwa. 2017. “Mobilizing Greater Crop and Land Potentials Sustainably”. Hungarian Geographical Bulletin 66 (1), 3-11. https://doi.org/10.15201/hungeobull.66.1.1.