PRIMARY SECTOR OF ECONOMY

PRIMARY SECTOR refers to the basic production like agriculture, forestry, mining or fishery.
Here you can find a couple of very good presentations about the item:

www.edu.xunta.es/contidos/rede_linguas/files/PRIMARY%20SECTOR.ppt

www.edu.xunta.es/contidos/rede_linguas/files/fishing.ppt

http://www.edu.xunta.es/contidos/rede_linguas/?q=node/81