The Perry-Castañeda Map Library at the University of Texas has a phenomenal collection, as well as connections to other collections. Among these maps you may find maps indicating regions of population density, natural resources, and production in certain countries.
If, for example, you are looking for regions of Mexico in which oil is produced, or areas of Argentina in which beef is produced, you may have success in searching the Image sites below for related maps.
Some productive keywords may include:
Keep in mind that you may not find an all-inclusive map which indicates the regions for production of all goods and raw materials within a given country. You may need to do specific searches. For example, you may need to search for:
