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Abstract
Excerpts: Of all the natural resources the only one which contains within itself the possibility of infinite renewal is land. The nation should therefore be most vitally concerned with the conservation and improvement of this resource. If a farsighted national policy in the conservation of natural resources is to make provision for an ever-increasing population, then the greatest possibilities lie in the direction of developing the land in all its forms—field, forest, and range—for, notwithstanding all possible economy in the use of the nonrenewable resources, they are bound to decrease as time goes on. Nor will they be able to give employment to the increasing population. Only in the development of the renewable resources lies an infinite field for the support and employment of a growing population.