| 1958 - 748 páginas
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| 1991 - 680 páginas
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| 1916 - 520 páginas
..."conserve the scenery and the natural and historic objects and the wild life therein and to provide for the enjoyment of the same in such manner and by such means as will leave them unimpaired for the enjoyment of future generations.." An effort is being made at... | |
| 1950 - 904 páginas
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| United States - 1916 - 1254 páginas
...DEPARTMENT OP THE INTERIOR the natural and historic objects and the wild life therein and to provide for as will leave them unimpaired for the enjoyment of future generations. (39 Stat.) All laws or parts... | |
| 1991 - 740 páginas
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| United States. National Park Service - 1920 - 488 páginas
...conserve the scenery and the natural and historic objects and the wild life therein and to provide for the enjoyment of the same in such manner and by such means as will leave them unimpaired for the enjoyment of future generations. PARK POLICY DEFINED. Furthermore,... | |
| United States. National Park Service - 1945 - 722 páginas
...conserve the scenerj and the natural and historic objects and the wildlife * * * and to provide for the enjoyment of the same in such manner and by such means as will leave them unimpaired for the enjoyment of future generations." The Mission 66 program is not... | |
| American Scenic and Historic Preservation Society - 1917 - 980 páginas
...conserve the scenery and the natural and historic objects and the wild life therein and to provide for the enjoyment of the same in such manner and by such means as will leave them unimpaired for the enjoyment of future generations. Section 2. That the director... | |
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