She tried to remember something about primitive tribes on Old Earth.

First, of course, you have to locate your most primitive tribe.

The local administration and the state government have first priority to provide primary facilities to the primitive tribes.

They share all these characteristics with other primitive tribes in the same group.

The primitive tribes permitted far less individual freedom than does modern society.

From his school days Francis had always been interested in anthropology, looking particularly at primitive tribes and their settlements.

We are not as far as we'd like to think from primitive tribes.

They are the sort used by certain primitive tribes in Guatemala.

The primitive tribes of the area were quickly overpowered by the European armies.

Very often social anthropologists who study primitive tribes 'live' with them for a period of time using this role.