31.   Saudi Arabia, whose income mostly comes from oil exports, has been trying to diversify its economy to lessen dependence on oil revenues.

32.   The Geopolitical Drugs Watch is a private French organization whose sole income comes from research projects.

33.   Their farm income comes from a variety of sources.

34.   Where does their income come from?

35.   Income would come from tourists and sales of related products at the centres.

36.   Portuguese main income comes from gambling and tourism.