To live on earth man and his environment in perspective.

Номзүйн дэлгэрэнгүй
Үндсэн зохиолч:	Brubaker, Sterling
Формат:	Ном
Хэл сонгох:	англи
Хэвлэсэн:	Baltimore Resources for the future by Johns Hopkins Press c1972.
Нөхцлүүд:	Ecology. Conservation of natural resources. Human ecology.