Title: Imperfect balance
Subjects: History, Landscape changes, Human ecology, Indians, Antiquities, Land tenure, Indians, antiquities, America, antiquities, Écologie humaine, Histoire, Paysages, Modifications, Indiens d'Amérique, Terres, Antiquités, SOCIAL SCIENCE, Human Geography, NATURE, Ecosystems & Habitats, General, Landschappen, Landgebruik, Indianen, Opgravingen
Places: America