Human ecology - History. - North America

Canada and arctic North America = an environmental history / by: (書目-電子資源)

Nature- Effect of human beings on- North America

Indians of North America- History.

Arctic regions

North America- Antiquities.

Nature- Effect of human beings on- Arctic regions

Human ecology- History.- North America

Human ecology- History.- Arctic regions

Paleo-Indians- North America.

Paleo-Indians- Arctic regions.

Indians of North America- History.- Arctic regions