@misc{ine2020main, title = {Main crops yield (kg/ ha) by Geographic localization (Agrarian region) and Specie; Annual - Statistics Portugal, Vegetable production statistics} author = {INE}, url = {https://ine.pt/xportal/xmain?xpid=INE&xpgid=ine_indicadores&indOcorrCod=0000023&contexto=bd&selTab=tab2}, year = {2020} }