Ventura-Lucas, M. R. .; Marques, C. .; de Belém Martins, M. .; Fragoso, R. . Portuguese Agriculture and Its Role in Multifunctional Rural Development. APSTRACT 2011, 5 (1-2), 39-46. https://doi.org/10.19041/APSTRACT/2011/1-2/5.