علوم کشاورزی (کب)

... > GENERAL > named regions and countries > named regions and countries by economic status > Threshold Countries > Brazil > Piaui

... > GENERAL > named regions and countries > named regions and countries by economic status > Developing Countries > Brazil > Piaui

... > GENERAL > named regions and countries > named regions and countries by continental groups > America > South America > Brazil > Piaui

... > GENERAL > named regions and countries > named regions and countries by language or culture > Latin America > Brazil > Piaui