How accurate is this list?

Sesa Goa, Sterlite Industries, and Hindustan Zinc are all subsidiaries of Vedanta Resources, ownership varying from company to company. Yet they are on this list separately. Does this mean that other subsidiaries of many of these companies were not included in their overall value?

Not including third party interests that would have to be worked out, and other subsidiaries not mentioned and possibly excluded, the group is 3.54+2.32+1.29+2.7= 9.85 billion.